Transmission and Reception of Channel State Information

ABSTRACT

Wireless communications may comprise transmission and reception. Control information may be associated with a reference signal. A wireless device may be configured to use a first transmission control indicator (TCI) state of at least two TCI states to receive a reference signal based on: a scheduling offset, and/or the reference signal overlapping in time with a scheduled physical downlink shared channel (PDSCH).

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of and claims priority to U.S. patentapplication Ser. No. 17/493,282, filed Oct. 4, 2021, which is acontinuation of U.S. patent application Ser. No. 16/790,830, filed Feb.14, 2020, which claims the benefit of U.S. Provisional Application No.62/805,543, filed on Feb. 14, 2019, each of which is hereby incorporatedby reference in its entirety.

BACKGROUND

Various procedures may be used for selecting wireless communicationresources. A wireless device and/or a base station may select one ormore beams among multiple beams for transmission and/or reception ofsignals. Signaling protocols may not be able to indicate/providesignaling information for the wireless device to select beams, which mayresult in the wireless device being unable to determine a beam to beused for transmission and/or reception of signals.

SUMMARY

The following summary presents a simplified summary of certain features.The summary is not an extensive overview and is not intended to identifykey or critical elements.

Wireless communications are described. Wireless communications maycomprise aperiodic transmission and reception. Control information maybe associated with an aperiodic reference signal. A wireless device maybe configured to use a first transmission control indicator (TCI) stateof at least two TCI states to receive an aperiodic reference signalbased on: a scheduling offset, and the aperiodic reference signaloverlapping in time with a scheduled physical downlink shared channel(PDSCH).

A wireless device may comprise various hardware and/or softwaretransmission/reception components (e.g., one or more antenna panels,transceivers, encoders, decoders, validators). The wireless device mayselectively activate or deactivate transmission/reception components forreception of data from one or more cells and/or transmission points. Thewireless device may report the activation status of the antenna panelsto a base station. The wireless device may, for example, reportactivation status based on an autonomous activation or deactivation ofan antenna panel by the wireless device. The wireless device may sendantenna panel activation status information to a base station using anuplink message and/or using a media access control control element (MACCE). A base station may, based on activation status information receivedfrom the wireless device, stop or start using channels and/or signalsassociated with an antenna panel associated with the activation status.The reporting of activation or deactivation of antenna panels may resultin advantages such as more efficient data transfer, higher signalreliability, and/or reduced latency between a transmitter and areceiver.

These and other features and advantages are described in greater detailbelow.

BRIEF DESCRIPTION OF THE DRAWINGS

Some features are shown by way of example, and not by limitation, in theaccompanying drawings. In the drawings, like numerals reference similarelements.

FIG. 1 shows an example radio access network (RAN) architecture.

FIG. 2A shows an example user plane protocol stack.

FIG. 2B shows an example control plane protocol stack.

FIG. 3 shows an example wireless device and two base stations.

FIG. 4A, FIG. 4B, FIG. 4C, and FIG. 4D show examples of uplink anddownlink signal transmission.

FIG. 5A shows an example uplink channel mapping and example uplinkphysical signals.

FIG. 5B shows an example downlink channel mapping and example downlinkphysical signals.

FIG. 6 shows an example transmission time and/or reception time for acarrier.

FIG. 7A and FIG. 7B show example sets of orthogonal frequency divisionmultiplexing (OFDM) subcarriers.

FIG. 8 shows example OFDM radio resources.

FIG. 9A shows an example channel state information reference signal(CSI-RS) and/or synchronization signal (SS) block transmission in amulti-beam system.

FIG. 9B shows an example downlink beam management procedure.

FIG. 10 shows an example of configured bandwidth parts (BWPs).

FIG. 11A and FIG. 11B show examples of multi connectivity.

FIG. 12 shows an example of a random access procedure.

FIG. 13 shows example medium access control (MAC) entities.

FIG. 14 shows an example RAN architecture.

FIG. 15 shows example radio resource control (RRC) states.

FIG. 16 shows example configurations of multiple antenna panels.

FIG. 17 shows an example timeline of antenna panel deactivation andactivation.

FIG. 18 shows an example timeline of antenna panel deactivation andactivation.

FIG. 19 shows an example timeline of antenna panel deactivation.

FIG. 20 shows an example timeline of antenna panel deactivation.

FIG. 21 shows an example timeline of antenna panel activation.

FIG. 22 shows an example timeline of antenna panel activation.

FIGS. 23A and 23B show example procedures for activating anddeactivating antenna panels.

FIG. 24 shows an example of multiple antenna panels and an uplinkreport.

FIG. 25A, FIG. 25B, FIG. 25C, FIG. 25D, FIG. 25E, and FIG. 25F showexamples of multiple antenna panels and indications ofactivation/deactivation of the multiple antenna panels.

FIG. 26 shows an example of a TCI State information element.

FIG. 27 shows an example timeline of TCI State configuration andselection.

FIG. 28 shows an example of an overlap between a downlink message and achannel state information reference signal (CSI-RS).

FIG. 29 shows an example procedure of managing overlap between adownlink message and a CSI-RS.

FIG. 30 shows an example procedure of managing overlap between adownlink message and a CSI-RS.

FIG. 31 shows example elements of a computing device that may be used toimplement any of the various devices described herein.

DETAILED DESCRIPTION

The accompanying drawings and descriptions provide examples. It is to beunderstood that the examples shown in the drawings and/or described arenon-exclusive and that there are other examples of how features shownand described may be practiced.

Examples are provided for operation of wireless communication systemswhich may be used in the technical field of multicarrier communicationsystems. More particularly, the technology described herein may relateto procedures for the management of multiple antenna panels and/ormultiple transmission and reception points in multicarrier communicationsystems.

The following acronyms are used throughout the drawings and/ordescriptions, and are provided below for convenience although otheracronyms may be introduced in the detailed description:

-   -   3GPP 3rd Generation Partnership Project    -   5GC 5G Core Network    -   ACK Acknowledgement    -   AMF Access and Mobility Management Function    -   ARQ Automatic Repeat Request    -   AS Access Stratum    -   ASIC Application-Specific Integrated Circuit    -   BA Bandwidth Adaptation    -   BCCH Broadcast Control Channel    -   BCH Broadcast Channel    -   BFR Beam Failure Recovery    -   BLER Block Error Rate    -   BPSK Binary Phase Shift Keying    -   BSR Buffer Status Report    -   BWP Bandwidth Part    -   CA Carrier Aggregation    -   CC Component Carrier    -   CCCH Common Control CHannel    -   CDMA Code Division Multiple Access    -   CN Core Network    -   CORESET Control Resource Set    -   CP Cyclic Prefix    -   CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplex    -   C-RNTI Cell-Radio Network Temporary Identifier    -   CS Configured Scheduling    -   CSI Channel State Information    -   CSI-RS Channel State Information-Reference Signal    -   CQI Channel Quality Indicator    -   CSS Common Search Space    -   CU Central Unit    -   DC Dual Connectivity    -   DCCH Dedicated Control Channel    -   DCI Downlink Control Information    -   DL Downlink    -   DL-SCH Downlink Shared CHannel    -   DM-RS DeModulation Reference Signal    -   DRB Data Radio Bearer    -   DRX Discontinuous Reception    -   DTCH Dedicated Traffic Channel    -   DU Distributed Unit    -   EPC Evolved Packet Core    -   E-UTRA Evolved UMTS Terrestrial Radio Access    -   E-UTRAN Evolved-Universal Terrestrial Radio Access Network    -   FDD Frequency Division Duplex    -   FPGA Field Programmable Gate Arrays    -   F1-C F1-Control plane    -   F1-U F1-User plane    -   gNB next generation Node B    -   HARQ Hybrid Automatic Repeat reQuest    -   HDL Hardware Description Languages    -   IE Information Element    -   IP Internet Protocol    -   LCH Logical Channel    -   LCID Logical Channel Identifier    -   LTE Long Term Evolution    -   MAC Medium Access Control    -   MCG Master Cell Group    -   MCS Modulation and Coding Scheme    -   MeNB Master evolved Node B    -   MIB Master Information Block    -   MME Mobility Management Entity    -   MN Master Node    -   NACK Negative Acknowledgement    -   NAS Non-Access Stratum    -   NG CP Next Generation Control Plane    -   NGC Next Generation Core    -   NG-C NG-Control plane    -   ng-eNB next generation evolved Node B    -   NG-U NG-User plane    -   NR New Radio    -   NR MAC New Radio MAC    -   NR PDCP New Radio PDCP    -   NR PHY New Radio PHYsical    -   NR RLC New Radio RLC    -   NR RRC New Radio RRC    -   NSSAI Network Slice Selection Assistance Information    -   O&M Operation and Maintenance    -   OFDM Orthogonal Frequency Division Multiplexing    -   PBCH Physical Broadcast CHannel    -   PCC Primary Component Carrier    -   PCCH Paging Control CHannel    -   PCell Primary Cell    -   PCH Paging CHannel    -   PDCCH Physical Downlink Control CHannel    -   PDCP Packet Data Convergence Protocol    -   PDSCH Physical Downlink Shared CHannel    -   PDU Protocol Data Unit    -   PHICH Physical HARQ Indicator CHannel    -   PHY PHYsical    -   PLMN Public Land Mobile Network    -   PMI Precoding Matrix Indicator    -   PRACH Physical Random Access CHannel    -   PRB Physical Resource Block    -   PSCell Primary Secondary Cell    -   PSS Primary Synchronization Signal    -   pTAG primary Timing Advance Group    -   PT-RS Phase Tracking Reference Signal    -   PUCCH Physical Uplink Control CHannel    -   PUSCH Physical Uplink Shared CHannel    -   QAM Quadrature Amplitude Modulation    -   QCLed Quasi-Co-Located    -   QCL Quasi-Co-Location    -   QFI Quality of Service Indicator    -   QoS Quality of Service    -   QPSK Quadrature Phase Shift Keying    -   RA Random Access    -   RACH Random Access CHannel    -   RAN Radio Access Network    -   RAT Radio Access Technology    -   RA-RNTI Random Access-Radio Network Temporary Identifier    -   RB Resource Blocks    -   RBG Resource Block Groups    -   RI Rank indicator    -   RLC Radio Link Control    -   RLM Radio Link Monitoring    -   RRC Radio Resource Control    -   RS Reference Signal    -   RSRP Reference Signal Received Power    -   SCC Secondary Component Carrier    -   SCell Secondary Cell    -   SCG Secondary Cell Group    -   SC-FDMA Single Carrier-Frequency Division Multiple Access    -   SDAP Service Data Adaptation Protocol    -   SDU Service Data Unit    -   SeNB Secondary evolved Node B    -   SFN System Frame Number    -   S-GW Serving GateWay    -   SI System Information    -   SIB System Information Block    -   SINR Signal-to-Interference-plus-Noise Ratio    -   SMF Session Management Function    -   SN Secondary Node    -   SpCell Special Cell    -   SR Scheduling Request    -   SRB Signaling Radio Bearer    -   SRS Sounding Reference Signal    -   SS Synchronization Signal    -   SSB Synchronization Signal Block    -   SSS Secondary Synchronization Signal    -   sTAG secondary Timing Advance Group    -   TA Timing Advance    -   TAG Timing Advance Group    -   TAI Tracking Area Identifier    -   TAT Time Alignment Timer    -   TB Transport Block    -   TC-RNTI Temporary Cell-Radio Network Temporary Identifier    -   TCI Transmission Configuration Indication    -   TDD Time Division Duplex    -   TDMA Time Division Multiple Access    -   TRP Transmission and Receiving Point    -   TTI Transmission Time Interval    -   UCI Uplink Control Information    -   UE User Equipment    -   UL Uplink    -   UL-SCH Uplink Shared CHannel    -   UPF User Plane Function    -   UPGW User Plane Gateway    -   VHDL VHSIC Hardware Description Language    -   Xn-C Xn-Control plane    -   Xn-U Xn-User plane

Examples described herein may be implemented using various physicallayer modulation and transmission mechanisms. Example transmissionmechanisms may include, but are not limited to: Code Division MultipleAccess (CDMA), Orthogonal Frequency Division Multiple Access (OFDMA),Time Division Multiple Access (TDMA), Wavelet technologies, and/or thelike. Hybrid transmission mechanisms such as TDMA/CDMA, and/or OFDM/CDMAmay be used. Various modulation schemes may be used for signaltransmission in the physical layer. Examples of modulation schemesinclude, but are not limited to: phase, amplitude, code, a combinationof these, and/or the like. An example radio transmission method mayimplement Quadrature Amplitude Modulation (QAM) using Binary Phase ShiftKeying (BPSK), Quadrature Phase Shift Keying (QPSK), 16-QAM, 64-QAM,256-QAM, 1024-QAM and/or the like. Physical radio transmission may beenhanced by dynamically or semi-dynamically changing the modulation andcoding scheme, for example, depending on transmission requirementsand/or radio conditions.

FIG. 1 shows an example Radio Access Network (RAN) architecture. A RANnode may comprise a next generation Node B (gNB) (e.g., 120A, 120B)providing New Radio (NR) user plane and control plane protocolterminations towards a first wireless device (e.g., 110A). A RAN nodemay comprise a base station such as a next generation evolved Node B(ng-eNB) (e.g., 120C, 120D), providing Evolved UMTS Terrestrial RadioAccess (E-UTRA) user plane and control plane protocol terminationstowards a second wireless device (e.g., 110B). A first wireless device110A may communicate with a base station, such as a gNB 120A, over a Uuinterface. A second wireless device 110B may communicate with a basestation, such as an ng-eNB 120D, over a Uu interface. The wirelessdevices 110A and/or 110B may be structurally similar to wireless devicesshown in and/or described in connection with other drawing figures. TheNode B 120A, the Node B 120B, the Node B 120C, and/or the Node B 120Dmay be structurally similar to Nodes B and/or base stations shown inand/or described in connection with other drawing figures.

A base station, such as a gNB (e.g., 120A, 120B, etc.) and/or an ng-eNB(e.g., 120C, 120D, etc.) may host functions such as radio resourcemanagement and scheduling, IP header compression, encryption andintegrity protection of data, selection of Access and MobilityManagement Function (AMF) at wireless device (e.g., User Equipment (UE))attachment, routing of user plane and control plane data, connectionsetup and release, scheduling and transmission of paging messages (e.g.,originated from the AMF), scheduling and transmission of systembroadcast information (e.g., originated from the AMF or Operation andMaintenance (O&M)), measurement and measurement reporting configuration,transport level packet marking in the uplink, session management,support of network slicing, Quality of Service (QoS) flow management andmapping to data radio bearers, support of wireless devices in aninactive state (e.g., RRC_INACTIVE state), distribution function forNon-Access Stratum (NAS) messages, RAN sharing, dual connectivity,and/or tight interworking between NR and E-UTRA.

One or more first base stations (e.g., gNBs 120A and 120B) and/or one ormore second base stations (e.g., ng-eNBs 120C and 120D) may beinterconnected with each other via Xn interface. A first base station(e.g., gNB 120A, 120B, etc.) or a second base station (e.g., ng-eNB120C, 120D, etc.) may be connected via NG interfaces to a network, suchas a 5G Core Network (5GC). A 5GC may comprise one or more AMF/User PlanFunction (UPF) functions (e.g., 130A and/or 130B). A base station (e.g.,a gNB and/or an ng-eNB) may be connected to a UPF via an NG-User plane(NG-U) interface. The NG-U interface may provide delivery (e.g.,non-guaranteed delivery) of user plane Protocol Data Units (PDUs)between a RAN node and the UPF. A base station (e.g., a gNB and/or anng-eNB) may be connected to an AMF via an NG-Control plane (NG-C)interface. The NG-C interface may provide functions such as NG interfacemanagement, wireless device (e.g., UE) context management, wirelessdevice (e.g., UE) mobility management, transport of NAS messages,paging, PDU session management, configuration transfer, and/or warningmessage transmission.

A UPF may host functions such as anchor point for intra-/inter-RadioAccess Technology (RAT) mobility (e.g., if applicable), external PDUsession point of interconnect to data network, packet routing andforwarding, packet inspection and user plane part of policy ruleenforcement, traffic usage reporting, uplink classifier to supportrouting traffic flows to a data network, branching point to supportmulti-homed PDU session, quality of service (QoS) handling for userplane, packet filtering, gating, Uplink (UL)/Downlink (DL) rateenforcement, uplink traffic verification (e.g., Service Data Flow (SDF)to QoS flow mapping), downlink packet buffering, and/or downlink datanotification triggering.

An AMF may host functions such as NAS signaling termination, NASsignaling security, Access Stratum (AS) security control, inter CoreNetwork (CN) node signaling (e.g., for mobility between 3rd GenerationPartnership Project (3GPP) access networks), idle mode wireless devicereachability (e.g., control and execution of paging retransmission),registration area management, support of intra-system and inter-systemmobility, access authentication, access authorization including check ofroaming rights, mobility management control (e.g., subscription and/orpolicies), support of network slicing, and/or Session ManagementFunction (SMF) selection.

FIG. 2A shows an example user plane protocol stack. A Service DataAdaptation Protocol (SDAP) (e.g., 211 and 221), Packet Data ConvergenceProtocol (PDCP) (e.g., 212 and 222), Radio Link Control (RLC) (e.g., 213and 223), and Medium Access Control (MAC) (e.g., 214 and 224) sublayers,and a Physical (PHY) (e.g., 215 and 225) layer, may be terminated in awireless device (e.g., 110) and in a base station (e.g., 120) on anetwork side. A PHY layer may provide transport services to higherlayers (e.g., MAC, RRC, etc.). Services and/or functions of a MACsublayer may comprise mapping between logical channels and transportchannels, multiplexing and/or demultiplexing of MAC Service Data Units(SDUs) belonging to the same or different logical channels into and/orfrom Transport Blocks (TBs) delivered to and/or from the PHY layer,scheduling information reporting, error correction through HybridAutomatic Repeat request (HARQ) (e.g., one HARQ entity per carrier forCarrier Aggregation (CA)), priority handling between wireless devicessuch as by using dynamic scheduling, priority handling between logicalchannels of a wireless device such as by using logical channelprioritization, and/or padding. A MAC entity may support one or multiplenumerologies and/or transmission timings. Mapping restrictions in alogical channel prioritization may control which numerology and/ortransmission timing a logical channel may use. An RLC sublayer maysupport transparent mode (TM), unacknowledged mode (UM), and/oracknowledged mode (AM) transmission modes. The RLC configuration may beper logical channel with no dependency on numerologies and/orTransmission Time Interval (TTI) durations. Automatic Repeat Request(ARQ) may operate on any of the numerologies and/or TTI durations withwhich the logical channel is configured. Services and functions of thePDCP layer for the user plane may comprise, for example, sequencenumbering, header compression and decompression, transfer of user data,reordering and duplicate detection, PDCP PDU routing (e.g., such as forsplit bearers), retransmission of PDCP SDUs, ciphering, deciphering andintegrity protection, PDCP SDU discard, PDCP re-establishment and datarecovery for RLC AM, and/or duplication of PDCP PDUs. Services and/orfunctions of SDAP may comprise, for example, mapping between a QoS flowand a data radio bearer. Services and/or functions of SDAP may comprisemapping a Quality of Service Indicator (QFI) in DL and UL packets. Aprotocol entity of SDAP may be configured for an individual PDU session.

FIG. 2B shows an example control plane protocol stack. A PDCP (e.g., 233and 242), RLC (e.g., 234 and 243), and MAC (e.g., 235 and 244)sublayers, and a PHY (e.g., 236 and 245) layer, may be terminated in awireless device (e.g., 110), and in a base station (e.g., 120) on anetwork side, and perform service and/or functions described above. RRC(e.g., 232 and 241) may be terminated in a wireless device and a basestation on a network side. Services and/or functions of RRC may comprisebroadcast of system information related to AS and/or NAS; paging (e.g.,initiated by a 5GC or a RAN); establishment, maintenance, and/or releaseof an RRC connection between the wireless device and RAN; securityfunctions such as key management, establishment, configuration,maintenance, and/or release of Signaling Radio Bearers (SRBs) and DataRadio Bearers (DRBs); mobility functions; QoS management functions;wireless device measurement reporting and control of the reporting;detection of and recovery from radio link failure; and/or NAS messagetransfer to/from NAS from/to a wireless device. NAS control protocol(e.g., 231 and 251) may be terminated in the wireless device and AMF(e.g., 130) on a network side. NAS control protocol may performfunctions such as authentication, mobility management between a wirelessdevice and an AMF (e.g., for 3GPP access and non-3GPP access), and/orsession management between a wireless device and an SMF (e.g., for 3GPPaccess and non-3GPP access).

A base station may configure a plurality of logical channels for awireless device. A logical channel of the plurality of logical channelsmay correspond to a radio bearer. The radio bearer may be associatedwith a QoS requirement. A base station may configure a logical channelto be mapped to one or more TTIs and/or numerologies in a plurality ofTTIs and/or numerologies. The wireless device may receive DownlinkControl Information (DCI) via a Physical Downlink Control CHannel(PDCCH) indicating an uplink grant. The uplink grant may be for a firstTTI and/or a first numerology and may indicate uplink resources fortransmission of a transport block. The base station may configure eachlogical channel in the plurality of logical channels with one or moreparameters to be used by a logical channel prioritization procedure atthe MAC layer of the wireless device. The one or more parameters maycomprise, for example, priority, prioritized bit rate, etc. A logicalchannel in the plurality of logical channels may correspond to one ormore buffers comprising data associated with the logical channel. Thelogical channel prioritization procedure may allocate the uplinkresources to one or more first logical channels in the plurality oflogical channels and/or to one or more MAC Control Elements (CEs). Theone or more first logical channels may be mapped to the first TTI and/orthe first numerology. The MAC layer at the wireless device may multiplexone or more MAC CEs and/or one or more MAC SDUs (e.g., logical channel)in a MAC PDU (e.g., transport block). The MAC PDU may comprise a MACheader comprising a plurality of MAC sub-headers. A MAC sub-header inthe plurality of MAC sub-headers may correspond to a MAC CE or a MAC SUD(e.g., logical channel) in the one or more MAC CEs and/or in the one ormore MAC SDUs. A MAC CE and/or a logical channel may be configured witha Logical Channel IDentifier (LCID). An LCID for a logical channeland/or a MAC CE may be fixed and/or pre-configured. An LCID for alogical channel and/or MAC CE may be configured for the wireless deviceby the base station. The MAC sub-header corresponding to a MAC CE and/ora MAC SDU may comprise an LCID associated with the MAC CE and/or the MACSDU.

A base station may activate, deactivate, and/or impact one or moreprocesses (e.g., set values of one or more parameters of the one or moreprocesses or start and/or stop one or more timers of the one or moreprocesses) at the wireless device, for example, by using one or more MACcommands. The one or more MAC commands may comprise one or more MACcontrol elements. The one or more processes may comprise activationand/or deactivation of PDCP packet duplication for one or more radiobearers. The base station may send (e.g., transmit) a MAC CE comprisingone or more fields. The values of the fields may indicate activationand/or deactivation of PDCP duplication for the one or more radiobearers. The one or more processes may comprise Channel StateInformation (CSI) transmission of on one or more cells. The base stationmay send (e.g., transmit) one or more MAC CEs indicating activationand/or deactivation of the CSI transmission on the one or more cells.The one or more processes may comprise activation and/or deactivation ofone or more secondary cells. The base station may send (e.g., transmit)a MAC CE indicating activation and/or deactivation of one or moresecondary cells. The base station may send (e.g., transmit) one or moreMAC CEs indicating starting and/or stopping of one or more DiscontinuousReception (DRX) timers at the wireless device. The base station may send(e.g., transmit) one or more MAC CEs that indicate one or more timingadvance values for one or more Timing Advance Groups (TAGs).

FIG. 3 shows an example of base stations (base station 1, 120A, and basestation 2, 120B) and a wireless device 110. The wireless device 110 maycomprise a UE or any other wireless device. The base station (e.g.,120A, 120B) may comprise a Node B, eNB, gNB, ng-eNB, or any other basestation. A wireless device and/or a base station may perform one or morefunctions of a relay node. The base station 1, 120A, may comprise atleast one communication interface 320A (e.g., a wireless modem, anantenna, a wired modem, and/or the like), at least one processor 321A,and at least one set of program code instructions 323A that may bestored in non-transitory memory 322A and executable by the at least oneprocessor 321A. The base station 2, 120B, may comprise at least onecommunication interface 320B, at least one processor 321B, and at leastone set of program code instructions 323B that may be stored innon-transitory memory 322B and executable by the at least one processor321B.

A base station may comprise any number of sectors, for example: 1, 2, 3,4, or 6 sectors. A base station may comprise any number of cells, forexample, ranging from 1 to 50 cells or more. A cell may be categorized,for example, as a primary cell or secondary cell. At Radio ResourceControl (RRC) connection establishment, re-establishment, handover,etc., a serving cell may provide NAS (non-access stratum) mobilityinformation (e.g., Tracking Area Identifier (TAI)). At RRC connectionre-establishment and/or handover, a serving cell may provide securityinput. This serving cell may be referred to as the Primary Cell (PCell).In the downlink, a carrier corresponding to the PCell may be a DLPrimary Component Carrier (PCC). In the uplink, a carrier may be an ULPCC. Secondary Cells (SCells) may be configured to form together with aPCell a set of serving cells, for example, depending on wireless devicecapabilities. In a downlink, a carrier corresponding to an SCell may bea downlink secondary component carrier (DL SCC). In an uplink, a carriermay be an uplink secondary component carrier (UL SCC). An SCell may ormay not have an uplink carrier.

A cell, comprising a downlink carrier and optionally an uplink carrier,may be assigned a physical cell ID and/or a cell index. A carrier(downlink and/or uplink) may belong to one cell. The cell ID and/or cellindex may identify the downlink carrier and/or uplink carrier of thecell (e.g., depending on the context it is used). A cell ID may beequally referred to as a carrier ID, and a cell index may be referred toas a carrier index. A physical cell ID and/or a cell index may beassigned to a cell. A cell ID may be determined using a synchronizationsignal transmitted via a downlink carrier. A cell index may bedetermined using RRC messages. A first physical cell ID for a firstdownlink carrier may indicate that the first physical cell ID is for acell comprising the first downlink carrier. The same concept may beused, for example, with carrier activation and/or deactivation (e.g.,secondary cell activation and/or deactivation). A first carrier that isactivated may indicate that a cell comprising the first carrier isactivated.

A base station may send (e.g., transmit) to a wireless device one ormore messages (e.g., RRC messages) comprising a plurality ofconfiguration parameters for one or more cells. One or more cells maycomprise at least one primary cell and at least one secondary cell. AnRRC message may be broadcasted and/or unicasted to the wireless device.Configuration parameters may comprise common parameters and dedicatedparameters.

Services and/or functions of an RRC sublayer may comprise at least oneof: broadcast of system information related to AS and/or NAS; paginginitiated by a 5GC and/or an NG-RAN; establishment, maintenance, and/orrelease of an RRC connection between a wireless device and an NG-RAN,which may comprise at least one of addition, modification, and/orrelease of carrier aggregation; and/or addition, modification, and/orrelease of dual connectivity in NR or between E-UTRA and NR. Servicesand/or functions of an RRC sublayer may comprise at least one ofsecurity functions comprising key management; establishment,configuration, maintenance, and/or release of Signaling Radio Bearers(SRBs) and/or Data Radio Bearers (DRBs); mobility functions which maycomprise at least one of a handover (e.g., intra NR mobility orinter-RAT mobility) and/or a context transfer; and/or a wireless devicecell selection and/or reselection and/or control of cell selection andreselection. Services and/or functions of an RRC sublayer may compriseat least one of QoS management functions; a wireless device measurementconfiguration/reporting; detection of and/or recovery from radio linkfailure; and/or NAS message transfer to and/or from a core networkentity (e.g., AMF, Mobility Management Entity (MME)) from and/or to thewireless device.

An RRC sublayer may support an RRC_Idle state, an RRC_Inactive state,and/or an RRC_Connected state for a wireless device. In an RRC_Idlestate, a wireless device may perform at least one of: Public Land MobileNetwork (PLMN) selection; receiving broadcasted system information; cellselection and/or re-selection; monitoring and/or receiving a paging formobile terminated data initiated by 5GC; paging for mobile terminateddata area managed by 5GC; and/or DRX for CN paging configured via NAS.In an RRC_Inactive state, a wireless device may perform at least one of:receiving broadcasted system information; cell selection and/orre-selection; monitoring and/or receiving a RAN and/or CN paginginitiated by an NG-RAN and/or a 5GC; RAN-based notification area (RNA)managed by an NG-RAN; and/or DRX for a RAN and/or CN paging configuredby NG-RAN/NAS. In an RRC_Idle state of a wireless device, a base station(e.g., NG-RAN) may keep a 5GC-NG-RAN connection (e.g., both C/U-planes)for the wireless device; and/or store a wireless device AS context forthe wireless device. In an RRC_Connected state of a wireless device, abase station (e.g., NG-RAN) may perform at least one of: establishmentof 5GC-NG-RAN connection (both C/U-planes) for the wireless device;storing a UE AS context for the wireless device; send (e.g., transmit)and/or receive of unicast data to and/or from the wireless device;and/or network-controlled mobility based on measurement results receivedfrom the wireless device. In an RRC_Connected state of a wirelessdevice, an NG-RAN may know a cell to which the wireless device belongs.

System information (SI) may be divided into minimum SI and other SI. Theminimum SI may be periodically broadcast. The minimum SI may comprisebasic information required for initial access and/or information foracquiring any other SI broadcast periodically and/or provisionedon-demand (e.g., scheduling information). The other SI may either bebroadcast, and/or be provisioned in a dedicated manner, such as eithertriggered by a network and/or upon request from a wireless device. Aminimum SI may be transmitted via two different downlink channels usingdifferent messages (e.g., MasterInformationBlock andSystemInformationBlockType1). Another SI may be transmitted viaSystemInformationBlockType2. For a wireless device in an RRC_Connectedstate, dedicated RRC signaling may be used for the request and deliveryof the other SI. For the wireless device in the RRC_Idle state and/or inthe RRC_Inactive state, the request may trigger a random accessprocedure.

A wireless device may report its radio access capability information,which may be static. A base station may request one or more indicationsof capabilities for a wireless device to report based on bandinformation. A temporary capability restriction request may be sent bythe wireless device (e.g., if allowed by a network) to signal thelimited availability of some capabilities (e.g., due to hardwaresharing, interference, and/or overheating) to the base station. The basestation may confirm or reject the request. The temporary capabilityrestriction may be transparent to 5GC (e.g., static capabilities may bestored in 5GC).

A wireless device may have an RRC connection with a network, forexample, if CA is configured. At RRC connection establishment,re-establishment, and/or handover procedures, a serving cell may provideNAS mobility information. At RRC connection re-establishment and/orhandover, a serving cell may provide a security input. This serving cellmay be referred to as the PCell. SCells may be configured to formtogether with the PCell a set of serving cells, for example, dependingon the capabilities of the wireless device. The configured set ofserving cells for the wireless device may comprise a PCell and one ormore SCells.

The reconfiguration, addition, and/or removal of SCells may be performedby RRC messaging. At intra-NR handover, RRC may add, remove, and/orreconfigure SCells for usage with the target PCell. Dedicated RRCsignaling may be used (e.g., if adding a new SCell) to send all requiredsystem information of the SCell (e.g., if in connected mode, wirelessdevices may not acquire broadcasted system information directly from theSCells).

The purpose of an RRC connection reconfiguration procedure may be tomodify an RRC connection, (e.g., to establish, modify, and/or releaseRBs; to perform handover; to setup, modify, and/or release measurements,for example, to add, modify, and/or release SCells and cell groups). NASdedicated information may be transferred from the network to thewireless device, for example, as part of the RRC connectionreconfiguration procedure. The RRCConnectionReconfiguration message maybe a command to modify an RRC connection. One or more RRC messages mayconvey information for measurement configuration, mobility control,and/or radio resource configuration (e.g., RBs, MAC main configuration,and/or physical channel configuration), which may comprise anyassociated dedicated NAS information and/or security configuration. Thewireless device may perform an SCell release, for example, if thereceived RRC Connection Reconfiguration message includes thesCellToReleaseList. The wireless device may perform SCell additions ormodification, for example, if the received RRC ConnectionReconfiguration message includes the sCellToAddModList.

An RRC connection establishment, reestablishment, and/or resumeprocedure may be to establish, reestablish, and/or resume an RRCconnection, respectively. An RRC connection establishment procedure maycomprise SRB 1 establishment. The RRC connection establishment proceduremay be used to transfer the initial NAS dedicated information and/ormessage from a wireless device to an E-UTRAN. TheRRCConnectionReestablishment message may be used to re-establish SRB 1.

A measurement report procedure may be used to transfer measurementresults from a wireless device to an NG-RAN. The wireless device mayinitiate a measurement report procedure, for example, after successfulsecurity activation. A measurement report message may be used to send(e.g., transmit) measurement results.

The wireless device 110 may comprise at least one communicationinterface 310 (e.g., a wireless modem, an antenna, and/or the like), atleast one processor 314, and at least one set of program codeinstructions 316 that may be stored in non-transitory memory 315 andexecutable by the at least one processor 314. The wireless device 110may further comprise at least one of at least one speaker and/ormicrophone 311, at least one keypad 312, at least one display and/ortouchpad 313, at least one power source 317, at least one globalpositioning system (GPS) chipset 318, and/or other peripherals 319.

The processor 314 of the wireless device 110, the processor 321A of thebase station 1 120A, and/or the processor 321B of the base station 2120B may comprise at least one of a general-purpose processor, a digitalsignal processor (DSP), a controller, a microcontroller, an applicationspecific integrated circuit (ASIC), a field programmable gate array(FPGA) and/or other programmable logic device, discrete gate and/ortransistor logic, discrete hardware components, and/or the like. Theprocessor 314 of the wireless device 110, the processor 321A in basestation 1 120A, and/or the processor 321B in base station 2 120B mayperform at least one of signal coding and/or processing, dataprocessing, power control, input/output processing, and/or any otherfunctionality that may enable the wireless device 110, the base station1 120A and/or the base station 2 120B to operate in a wirelessenvironment.

The processor 314 of the wireless device 110 may be connected to and/orin communication with the speaker and/or microphone 311, the keypad 312,and/or the display and/or touchpad 313. The processor 314 may receiveuser input data from and/or provide user output data to the speakerand/or microphone 311, the keypad 312, and/or the display and/ortouchpad 313. The processor 314 in the wireless device 110 may receivepower from the power source 317 and/or may be configured to distributethe power to the other components in the wireless device 110. The powersource 317 may comprise at least one of one or more dry cell batteries,solar cells, fuel cells, and/or the like. The processor 314 may beconnected to the GPS chipset 318. The GPS chipset 318 may be configuredto provide geographic location information of the wireless device 110.

The processor 314 of the wireless device 110 may further be connected toand/or in communication with other peripherals 319, which may compriseone or more software and/or hardware modules that may provide additionalfeatures and/or functionalities. For example, the peripherals 319 maycomprise at least one of an accelerometer, a satellite transceiver, adigital camera, a universal serial bus (USB) port, a hands-free headset,a frequency modulated (FM) radio unit, a media player, an Internetbrowser, and/or the like.

The communication interface 320A of the base station 1, 120A, and/or thecommunication interface 320B of the base station 2, 120B, may beconfigured to communicate with the communication interface 310 of thewireless device 110, for example, via a wireless link 330A and/or via awireless link 330B, respectively. The communication interface 320A ofthe base station 1, 120A, may communicate with the communicationinterface 320B of the base station 2 and/or other RAN and/or corenetwork nodes.

The wireless link 330A and/or the wireless link 330B may comprise atleast one of a bi-directional link and/or a directional link. Thecommunication interface 310 of the wireless device 110 may be configuredto communicate with the communication interface 320A of the base station1 120A and/or with the communication interface 320B of the base station2 120B. The base station 1 120A and the wireless device 110, and/or thebase station 2 120B and the wireless device 110, may be configured tosend and receive transport blocks, for example, via the wireless link330A and/or via the wireless link 330B, respectively. The wireless link330A and/or the wireless link 330B may use at least one frequencycarrier. Transceiver(s) may be used. A transceiver may be a device thatcomprises both a transmitter and a receiver. Transceivers may be used indevices such as wireless devices, base stations, relay nodes, computingdevices, and/or the like. Radio technology may be implemented in thecommunication interface 310, 320A, and/or 320B, and the wireless link330A and/or 330B. The radio technology may comprise one or more elementsshown in FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, FIG. 6 , FIG. 7A, FIG. 7B,FIG. 8 , and associated text, described below.

Other nodes in a wireless network (e.g., AMF, UPF, SMF, etc.) maycomprise one or more communication interfaces, one or more processors,and memory storing instructions. A node (e.g., wireless device, basestation, AMF, SMF, UPF, servers, switches, antennas, and/or the like)may comprise one or more processors, and memory storing instructionsthat when executed by the one or more processors causes the node toperform certain processes and/or functions. Single-carrier and/ormulti-carrier communication operation may be performed. A non-transitorytangible computer readable media may comprise instructions executable byone or more processors to cause operation of single-carrier and/ormulti-carrier communications. An article of manufacture may comprise anon-transitory tangible computer readable machine-accessible mediumhaving instructions encoded thereon for enabling programmable hardwareto cause a node to enable operation of single-carrier and/ormulti-carrier communications. The node may include processors, memory,interfaces, and/or the like.

An interface may comprise at least one of a hardware interface, afirmware interface, a software interface, and/or a combination thereof.The hardware interface may comprise connectors, wires, and/or electronicdevices such as drivers, amplifiers, and/or the like. The softwareinterface may comprise code stored in a memory device to implementprotocol(s), protocol layers, communication drivers, device drivers,combinations thereof, and/or the like. The firmware interface maycomprise a combination of embedded hardware and/or code stored in(and/or in communication with) a memory device to implement connections,electronic device operations, protocol(s), protocol layers,communication drivers, device drivers, hardware operations, combinationsthereof, and/or the like.

A communication network may comprise the wireless device 110, the basestation 1, 120A, the base station 2, 120B, and/or any other device. Thecommunication network may comprise any number and/or type of devices,such as, for example, computing devices, wireless devices, mobiledevices, handsets, tablets, laptops, internet of things (IoT) devices,hotspots, cellular repeaters, computing devices, and/or, more generally,user equipment (e.g., UE). Although one or more of the above types ofdevices may be referenced herein (e.g., UE, wireless device, computingdevice, etc.), it should be understood that any device herein maycomprise any one or more of the above types of devices or similardevices. The communication network, and any other network referencedherein, may comprise an LTE network, a 5G network, or any other networkfor wireless communications. Apparatuses, systems, and/or methodsdescribed herein may generally be described as implemented on one ormore devices (e.g., wireless device, base station, eNB, gNB, computingdevice, etc.), in one or more networks, but it will be understood thatone or more features and steps may be implemented on any device and/orin any network. As used throughout, the term “base station” may compriseone or more of: a base station, a node, a Node B, a gNB, an eNB, anng-eNB, a relay node (e.g., an integrated access and backhaul (IAB)node), a donor node (e.g., a donor eNB, a donor gNB, etc.), an accesspoint (e.g., a WiFi access point), a computing device, a device capableof wirelessly communicating, or any other device capable of sendingand/or receiving signals. As used throughout, the term “wireless device”may comprise one or more of: a UE, a handset, a mobile device, acomputing device, a node, a device capable of wirelessly communicating,or any other device capable of sending and/or receiving signals. Anyreference to one or more of these terms/devices also considers use ofany other term/device mentioned above.

FIG. 4A, FIG. 4B, FIG. 4C and FIG. 4D show examples of uplink anddownlink signal transmission. FIG. 4A shows an example uplinktransmitter for at least one physical channel. A baseband signalrepresenting a physical uplink shared channel may perform one or morefunctions. The one or more functions may comprise at least one of:scrambling (e.g., by Scrambling); modulation of scrambled bits togenerate complex-valued symbols (e.g., by a Modulation mapper); mappingof the complex-valued modulation symbols onto one or severaltransmission layers (e.g., by a Layer mapper); transform precoding togenerate complex-valued symbols (e.g., by a Transform precoder);precoding of the complex-valued symbols (e.g., by a Precoder); mappingof precoded complex-valued symbols to resource elements (e.g., by aResource element mapper); generation of complex-valued time-domainSingle Carrier-Frequency Division Multiple Access (SC-FDMA) or CP-OFDMsignal for an antenna port (e.g., by a signal gen.); and/or the like. ASC-FDMA signal for uplink transmission may be generated, for example, iftransform precoding is enabled. A CP-OFDM signal for uplink transmissionmay be generated by FIG. 4A, for example, if transform precoding is notenabled. These functions are shown as examples and other mechanisms maybe implemented.

FIG. 4B shows an example of modulation and up-conversion to the carrierfrequency of a complex-valued SC-FDMA or CP-OFDM baseband signal for anantenna port and/or for the complex-valued Physical Random AccessCHannel (PRACH) baseband signal. Filtering may be performed prior totransmission.

FIG. 4C shows an example of downlink transmissions. The baseband signalrepresenting a downlink physical channel may perform one or morefunctions. The one or more functions may comprise: scrambling of codedbits in a codeword to be transmitted on a physical channel (e.g., byScrambling); modulation of scrambled bits to generate complex-valuedmodulation symbols (e.g., by a Modulation mapper); mapping of thecomplex-valued modulation symbols onto one or several transmissionlayers (e.g., by a Layer mapper); precoding of the complex-valuedmodulation symbols on a layer for transmission on the antenna ports(e.g., by Precoding); mapping of complex-valued modulation symbols foran antenna port to resource elements (e.g., by a Resource elementmapper); generation of complex-valued time-domain OFDM signal for anantenna port (e.g., by an OFDM signal gen.); and/or the like. Thesefunctions are shown as examples and other mechanisms may be implemented.

A base station may send (e.g., transmit) a first symbol and a secondsymbol on an antenna port, to a wireless device. The wireless device mayinfer the channel (e.g., fading gain, multipath delay, etc.) forconveying the second symbol on the antenna port, from the channel forconveying the first symbol on the antenna port. A first antenna port anda second antenna port may be quasi co-located, for example, if one ormore large-scale properties of the channel over which a first symbol onthe first antenna port is conveyed may be inferred from the channel overwhich a second symbol on a second antenna port is conveyed. The one ormore large-scale properties may comprise at least one of: delay spread;Doppler spread; Doppler shift; average gain; average delay; and/orspatial receiving (Rx) parameters.

FIG. 4D shows an example modulation and up-conversion to the carrierfrequency of the complex-valued OFDM baseband signal for an antennaport. Filtering may be performed prior to transmission.

FIG. 5A shows example uplink channel mapping and example uplink physicalsignals. A physical layer may provide one or more information transferservices to a MAC and/or one or more higher layers. The physical layermay provide the one or more information transfer services to the MAC viaone or more transport channels. An information transfer service mayindicate how and/or with what characteristics data is transferred overthe radio interface.

Uplink transport channels may comprise an Uplink-Shared CHannel (UL-SCH)501 and/or a Random Access CHannel (RACH) 502. A wireless device maysend (e.g., transmit) one or more uplink DM-RSs 506 to a base stationfor channel estimation, for example, for coherent demodulation of one ormore uplink physical channels (e.g., PUSCH 503 and/or PUCCH 504). Thewireless device may send (e.g., transmit) to a base station at least oneuplink DM-RS 506 with PUSCH 503 and/or PUCCH 504, wherein the at leastone uplink DM-RS 506 may be spanning a same frequency range as acorresponding physical channel. The base station may configure thewireless device with one or more uplink DM-RS configurations. At leastone DM-RS configuration may support a front-loaded DM-RS pattern. Afront-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., 1or 2 adjacent OFDM symbols). One or more additional uplink DM-RS may beconfigured to send (e.g., transmit) at one or more symbols of a PUSCHand/or PUCCH. The base station may semi-statically configure thewireless device with a maximum number of front-loaded DM-RS symbols forPUSCH and/or PUCCH. The wireless device may schedule a single-symbolDM-RS and/or double symbol DM-RS based on a maximum number offront-loaded DM-RS symbols, wherein the base station may configure thewireless device with one or more additional uplink DM-RS for PUSCHand/or PUCCH. A new radio network may support, for example, at least forCP-OFDM, a common DM-RS structure for DL and UL, wherein a DM-RSlocation, DM-RS pattern, and/or scrambling sequence may be same ordifferent.

Whether or not an uplink PT-RS 507 is present may depend on an RRCconfiguration. A presence of the uplink PT-RS may be wirelessdevice-specifically configured. A presence and/or a pattern of theuplink PT-RS 507 in a scheduled resource may be wirelessdevice-specifically configured by a combination of RRC signaling and/orassociation with one or more parameters used for other purposes (e.g.,Modulation and Coding Scheme (MCS)) which may be indicated by DCI. Ifconfigured, a dynamic presence of uplink PT-RS 507 may be associatedwith one or more DCI parameters comprising at least a MCS. A radionetwork may support a plurality of uplink PT-RS densities defined intime/frequency domain. If present, a frequency domain density may beassociated with at least one configuration of a scheduled bandwidth. Awireless device may assume a same precoding for a DM-RS port and a PT-RSport. A number of PT-RS ports may be less than a number of DM-RS portsin a scheduled resource. The uplink PT-RS 507 may be confined in thescheduled time/frequency duration for a wireless device.

A wireless device may send (e.g., transmit) an SRS 508 to a base stationfor channel state estimation, for example, to support uplink channeldependent scheduling and/or link adaptation. The SRS 508 sent (e.g.,transmitted) by the wireless device may allow for the base station toestimate an uplink channel state at one or more different frequencies. Abase station scheduler may use an uplink channel state to assign one ormore resource blocks of a certain quality (e.g., above a qualitythreshold) for an uplink PUSCH transmission from the wireless device.The base station may semi-statically configure the wireless device withone or more SRS resource sets. For an SRS resource set, the base stationmay configure the wireless device with one or more SRS resources. An SRSresource set applicability may be configured by a higher layer (e.g.,RRC) parameter. An SRS resource in each of one or more SRS resource setsmay be sent (e.g., transmitted) at a time instant, for example, if ahigher layer parameter indicates beam management. The wireless devicemay send (e.g., transmit) one or more SRS resources in different SRSresource sets simultaneously. A new radio network may support aperiodic,periodic, and/or semi-persistent SRS transmissions. The wireless devicemay send (e.g., transmit) SRS resources, for example, based on one ormore trigger types. The one or more trigger types may comprise higherlayer signaling (e.g., RRC) and/or one or more DCI formats (e.g., atleast one DCI format may be used for a wireless device to select atleast one of one or more configured SRS resource sets). An SRS triggertype 0 may refer to an SRS triggered based on a higher layer signaling.An SRS trigger type 1 may refer to an SRS triggered based on one or moreDCI formats. The wireless device may be configured to send (e.g.,transmit) the SRS 508 after a transmission of PUSCH 503 andcorresponding uplink DM-RS 506, for example, if PUSCH 503 and the SRS508 are transmitted in a same slot.

A base station may semi-statically configure a wireless device with oneor more SRS configuration parameters indicating at least one offollowing: an SRS resource configuration identifier, a number of SRSports, time domain behavior of SRS resource configuration (e.g., anindication of periodic, semi-persistent, or aperiodic SRS), slot(mini-slot, and/or subframe) level periodicity and/or offset for aperiodic and/or aperiodic SRS resource, a number of OFDM symbols in aSRS resource, starting OFDM symbol of a SRS resource, an SRS bandwidth,a frequency hopping bandwidth, a cyclic shift, and/or an SRS sequenceID.

FIG. 5B shows an example downlink channel mapping and downlink physicalsignals. Downlink transport channels may comprise a Downlink-SharedCHannel (DL-SCH) 511, a Paging CHannel (PCH) 512, and/or a BroadcastCHannel (BCH) 513. A transport channel may be mapped to one or morecorresponding physical channels. A UL-SCH 501 may be mapped to aPhysical Uplink Shared CHannel (PUSCH) 503. A RACH 502 may be mapped toa PRACH 505. A DL-SCH 511 and a PCH 512 may be mapped to a PhysicalDownlink Shared CHannel (PDSCH) 514. A BCH 513 may be mapped to aPhysical Broadcast CHannel (PBCH) 516.

A radio network may comprise one or more downlink and/or uplinktransport channels. The radio network may comprise one or more physicalchannels without a corresponding transport channel. The one or morephysical channels may be used for an Uplink Control Information (UCI)509 and/or a Downlink Control Information (DCI) 517. A Physical UplinkControl CHannel (PUCCH) 504 may carry UCI 509 from a wireless device toa base station. A Physical Downlink Control CHannel (PDCCH) 515 maycarry the DCI 517 from a base station to a wireless device. The radionetwork (e.g., NR) may support the UCI 509 multiplexing in the PUSCH503, for example, if the UCI 509 and the PUSCH 503 transmissions maycoincide in a slot (e.g., at least in part). The UCI 509 may comprise atleast one of a CSI, an Acknowledgement (ACK)/Negative Acknowledgement(NACK), and/or a scheduling request. The DCI 517 via the PDCCH 515 mayindicate at least one of following: one or more downlink assignmentsand/or one or more uplink scheduling grants.

In uplink, a wireless device may send (e.g., transmit) one or moreReference Signals (RSs) to a base station. The one or more RSs maycomprise at least one of a Demodulation-RS (DM-RS) 506, a PhaseTracking-RS (PT-RS) 507, and/or a Sounding RS (SRS) 508. In downlink, abase station may send (e.g., transmit, unicast, multicast, and/orbroadcast) one or more RSs to a wireless device. The one or more RSs maycomprise at least one of a Primary Synchronization Signal(PSS)/Secondary Synchronization Signal (SSS) 521, a CSI-RS 522, a DM-RS523, and/or a PT-RS 524.

In a time domain, an SS/PBCH block may comprise one or more OFDM symbols(e.g., 4 OFDM symbols numbered in increasing order from 0 to 3) withinthe SS/PBCH block. An SS/PBCH block may comprise the PSS/SSS 521 and/orthe PBCH 516. In the frequency domain, an SS/PBCH block may comprise oneor more contiguous subcarriers (e.g., 240 contiguous subcarriers withthe subcarriers numbered in increasing order from 0 to 239) within theSS/PBCH block. The PSS/SSS 521 may occupy, for example, 1 OFDM symboland 127 subcarriers. The PBCH 516 may span across, for example, 3 OFDMsymbols and 240 subcarriers. A wireless device may assume that one ormore SS/PBCH blocks transmitted with a same block index may be quasico-located, for example, with respect to Doppler spread, Doppler shift,average gain, average delay, and/or spatial Rx parameters. A wirelessdevice may not assume quasi co-location for other SS/PBCH blocktransmissions. A periodicity of an SS/PBCH block may be configured by aradio network (e.g., by an RRC signaling). One or more time locations inwhich the SS/PBCH block may be sent may be determined by sub-carrierspacing. A wireless device may assume a band-specific sub-carrierspacing for an SS/PBCH block, for example, unless a radio network hasconfigured the wireless device to assume a different sub-carrierspacing.

The downlink CSI-RS 522 may be used for a wireless device to acquirechannel state information. A radio network may support periodic,aperiodic, and/or semi-persistent transmission of the downlink CSI-RS522. A base station may semi-statically configure and/or reconfigure awireless device with periodic transmission of the downlink CSI-RS 522. Aconfigured CSI-RS resources may be activated and/or deactivated. Forsemi-persistent transmission, an activation and/or deactivation of aCSI-RS resource may be triggered dynamically. A CSI-RS configuration maycomprise one or more parameters indicating at least a number of antennaports. A base station may configure a wireless device with 32 ports, orany other number of ports. A base station may semi-statically configurea wireless device with one or more CSI-RS resource sets. One or moreCSI-RS resources may be allocated from one or more CSI-RS resource setsto one or more wireless devices. A base station may semi-staticallyconfigure one or more parameters indicating CSI RS resource mapping, forexample, time-domain location of one or more CSI-RS resources, abandwidth of a CSI-RS resource, and/or a periodicity. A wireless devicemay be configured to use the same OFDM symbols for the downlink CSI-RS522 and the Control Resource Set (CORESET), for example, if the downlinkCSI-RS 522 and the CORESET are spatially quasi co-located and resourceelements associated with the downlink CSI-RS 522 are the outside of PRBsconfigured for the CORESET. A wireless device may be configured to usethe same OFDM symbols for downlink CSI-RS 522 and SS/PBCH blocks, forexample, if the downlink CSI-RS 522 and SS/PBCH blocks are spatiallyquasi co-located and resource elements associated with the downlinkCSI-RS 522 are outside of the PRBs configured for the SS/PBCH blocks.

A wireless device may send (e.g., transmit) one or more downlink DM-RSs523 to a base station for channel estimation, for example, for coherentdemodulation of one or more downlink physical channels (e.g., PDSCH514). A radio network may support one or more variable and/orconfigurable DM-RS patterns for data demodulation. At least one downlinkDM-RS configuration may support a front-loaded DM-RS pattern. Afront-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., 1or 2 adjacent OFDM symbols). A base station may semi-staticallyconfigure a wireless device with a maximum number of front-loaded DM-RSsymbols for PDSCH 514. A DM-RS configuration may support one or moreDM-RS ports. A DM-RS configuration may support at least 8 orthogonaldownlink DM-RS ports, for example, for single user-MIMO. ADM-RSconfiguration may support 12 orthogonal downlink DM-RS ports, forexample, for multiuser-MIMO. A radio network may support, for example,at least for CP-OFDM, a common DM-RS structure for DL and UL, wherein aDM-RS location, DM-RS pattern, and/or scrambling sequence may be thesame or different.

Whether or not the downlink PT-RS 524 is present may depend on an RRCconfiguration. A presence of the downlink PT-RS 524 may be wirelessdevice-specifically configured. A presence and/or a pattern of thedownlink PT-RS 524 in a scheduled resource may be wirelessdevice-specifically configured, for example, by a combination of RRCsignaling and/or an association with one or more parameters used forother purposes (e.g., MCS) which may be indicated by the DCI. Ifconfigured, a dynamic presence of the downlink PT-RS 524 may beassociated with one or more DCI parameters comprising at least MCS. Aradio network may support a plurality of PT-RS densities in atime/frequency domain. If present, a frequency domain density may beassociated with at least one configuration of a scheduled bandwidth. Awireless device may assume the same precoding for a DM-RS port and aPT-RS port. A number of PT-RS ports may be less than a number of DM-RSports in a scheduled resource. The downlink PT-RS 524 may be confined inthe scheduled time/frequency duration for a wireless device.

FIG. 6 shows an example transmission time and reception time, as well asan example frame structure, for a carrier. A multicarrier OFDMcommunication system may include one or more carriers, for example,ranging from 1 to 32 carriers (such as for carrier aggregation) orranging from 1 to 64 carriers (such as for dual connectivity). Differentradio frame structures may be supported (e.g., for FDD and/or for TDDduplex mechanisms). FIG. 6 shows an example frame timing. Downlink anduplink transmissions may be organized into radio frames 601. Radio frameduration may be 10 milliseconds (ms). A 10 ms radio frame 601 may bedivided into ten equally sized subframes 602, each with a 1 ms duration.Subframe(s) may comprise one or more slots (e.g., slots 603 and 605)depending on subcarrier spacing and/or CP length. For example, asubframe with 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz and 480 kHzsubcarrier spacing may comprise one, two, four, eight, sixteen andthirty-two slots, respectively. In FIG. 6 , a subframe may be dividedinto two equally sized slots 603 with 0.5 ms duration. For example, 10subframes may be available for downlink transmission and 10 subframesmay be available for uplink transmissions in a 10 ms interval. Othersubframe durations such as, for example, 0.5 ms, 1 ms, 2 ms, and 5 msmay be supported. Uplink and downlink transmissions may be separated inthe frequency domain. Slot(s) may include a plurality of OFDM symbols604. The number of OFDM symbols 604 in a slot 605 may depend on thecyclic prefix length. A slot may be 14 OFDM symbols for the samesubcarrier spacing of up to 480 kHz with normal CP. A slot may be 12OFDM symbols for the same subcarrier spacing of 60 kHz with extended CP.A slot may comprise downlink, uplink, and/or a downlink part and anuplink part, and/or alike.

FIG. 7A shows example sets of OFDM subcarriers. A base station maycommunicate with a wireless device using a carrier having an examplechannel bandwidth 700. Arrow(s) in the example may depict a subcarrierin a multicarrier OFDM system. The OFDM system may use technology suchas OFDM technology, SC-FDMA technology, and/or the like. An arrow 701shows a subcarrier transmitting information symbols. A subcarrierspacing 702, between two contiguous subcarriers in a carrier, may be anyone of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, or any other frequency.Different subcarrier spacing may correspond to different transmissionnumerologies. A transmission numerology may comprise at least: anumerology index; a value of subcarrier spacing; and/or a type of cyclicprefix (CP). A base station may send (e.g., transmit) to and/or receivefrom a wireless device via a number of subcarriers 703 in a carrier. Abandwidth occupied by a number of subcarriers 703 (e.g., transmissionbandwidth) may be smaller than the channel bandwidth 700 of a carrier,for example, due to guard bands 704 and 705. Guard bands 704 and 705 maybe used to reduce interference to and from one or more neighborcarriers. A number of subcarriers (e.g., transmission bandwidth) in acarrier may depend on the channel bandwidth of the carrier and/or thesubcarrier spacing. A transmission bandwidth, for a carrier with a 20MHz channel bandwidth and a 15 kHz subcarrier spacing, may be in numberof 1024 subcarriers.

A base station and a wireless device may communicate with multiplecomponent carriers (CCs), for example, if configured with CA. Differentcomponent carriers may have different bandwidth and/or differentsubcarrier spacing, for example, if CA is supported. A base station maysend (e.g., transmit) a first type of service to a wireless device via afirst component carrier. The base station may send (e.g., transmit) asecond type of service to the wireless device via a second componentcarrier. Different types of services may have different servicerequirements (e.g., data rate, latency, reliability), which may besuitable for transmission via different component carriers havingdifferent subcarrier spacing and/or different bandwidth.

FIG. 7B shows examples of component carriers. A first component carriermay comprise a first number of subcarriers 706 having a first subcarrierspacing 709. A second component carrier may comprise a second number ofsubcarriers 707 having a second subcarrier spacing 710. A thirdcomponent carrier may comprise a third number of subcarriers 708 havinga third subcarrier spacing 711. Carriers in a multicarrier OFDMcommunication system may be contiguous carriers, non-contiguouscarriers, or a combination of both contiguous and non-contiguouscarriers.

FIG. 8 shows an example of OFDM radio resources. A carrier may have atransmission bandwidth 801. A resource grid may be in a structure offrequency domain 802 and time domain 803. A resource grid may comprise afirst number of OFDM symbols in a subframe and a second number ofresource blocks, starting from a common resource block indicated byhigher-layer signaling (e.g., RRC signaling), for a transmissionnumerology and a carrier. In a resource grid, a resource element 805 maycomprise a resource unit that may be identified by a subcarrier indexand a symbol index. A subframe may comprise a first number of OFDMsymbols 807 that may depend on a numerology associated with a carrier. Asubframe may have 14 OFDM symbols for a carrier, for example, if asubcarrier spacing of a numerology of a carrier is 15 kHz. A subframemay have 28 OFDM symbols, for example, if a subcarrier spacing of anumerology is 30 kHz. A subframe may have 56 OFDM symbols, for example,if a subcarrier spacing of a numerology is 60 kHz. A subcarrier spacingof a numerology may comprise any other frequency. A second number ofresource blocks comprised in a resource grid of a carrier may depend ona bandwidth and a numerology of the carrier.

A resource block 806 may comprise 12 subcarriers. Multiple resourceblocks may be grouped into a Resource Block Group (RBG) 804. A size of aRBG may depend on at least one of: a RRC message indicating a RBG sizeconfiguration; a size of a carrier bandwidth; and/or a size of abandwidth part of a carrier. A carrier may comprise multiple bandwidthparts. A first bandwidth part of a carrier may have a differentfrequency location and/or a different bandwidth from a second bandwidthpart of the carrier.

A base station may send (e.g., transmit), to a wireless device, adownlink control information comprising a downlink or uplink resourceblock assignment. A base station may send (e.g., transmit) to and/orreceive from, a wireless device, data packets (e.g., transport blocks).The data packets may be scheduled on and transmitted via one or moreresource blocks and one or more slots indicated by parameters indownlink control information and/or RRC message(s). A starting symbolrelative to a first slot of the one or more slots may be indicated tothe wireless device. A base station may send (e.g., transmit) to and/orreceive from, a wireless device, data packets. The data packets may bescheduled for transmission on one or more RBGs and in one or more slots.

A base station may send (e.g., transmit), to a wireless device, downlinkcontrol information comprising a downlink assignment. The base stationmay send (e.g., transmit) the DCI via one or more PDCCHs. The downlinkassignment may comprise parameters indicating at least one of amodulation and coding format; resource allocation; and/or HARQinformation related to the DL-SCH. The resource allocation may compriseparameters of resource block allocation; and/or slot allocation. A basestation may allocate (e.g., dynamically) resources to a wireless device,for example, via a Cell-Radio Network Temporary Identifier (C-RNTI) onone or more PDCCHs. The wireless device may monitor the one or morePDCCHs, for example, in order to find possible allocation if itsdownlink reception is enabled. The wireless device may receive one ormore downlink data packets on one or more PDSCH scheduled by the one ormore PDCCHs, for example, if the wireless device successfully detectsthe one or more PDCCHs.

A base station may allocate Configured Scheduling (CS) resources fordown link transmission to a wireless device. The base station may send(e.g., transmit) one or more RRC messages indicating a periodicity ofthe CS grant. The base station may send (e.g., transmit) DCI via a PDCCHaddressed to a Configured Scheduling-RNTI (CS-RNTI) activating the CSresources. The DCI may comprise parameters indicating that the downlinkgrant is a CS grant. The CS grant may be implicitly reused according tothe periodicity defined by the one or more RRC messages. The CS grantmay be implicitly reused, for example, until deactivated.

A base station may send (e.g., transmit), to a wireless device via oneor more PDCCHs, downlink control information comprising an uplink grant.The uplink grant may comprise parameters indicating at least one of amodulation and coding format; a resource allocation; and/or HARQinformation related to the UL-SCH. The resource allocation may compriseparameters of resource block allocation; and/or slot allocation. Thebase station may dynamically allocate resources to the wireless devicevia a C-RNTI on one or more PDCCHs. The wireless device may monitor theone or more PDCCHs, for example, in order to find possible resourceallocation. The wireless device may send (e.g., transmit) one or moreuplink data packets via one or more PUSCH scheduled by the one or morePDCCHs, for example, if the wireless device successfully detects the oneor more PDCCHs.

The base station may allocate CS resources for uplink data transmissionto a wireless device. The base station may transmit one or more RRCmessages indicating a periodicity of the CS grant. The base station maysend (e.g., transmit) DCI via a PDCCH addressed to a CS-RNTI to activatethe CS resources. The DCI may comprise parameters indicating that theuplink grant is a CS grant. The CS grant may be implicitly reusedaccording to the periodicity defined by the one or more RRC message, TheCS grant may be implicitly reused, for example, until deactivated.

A base station may send (e.g., transmit) DCI and/or control signalingvia a PDCCH. The DCI may comprise a format of a plurality of formats.The DCI may comprise downlink and/or uplink scheduling information(e.g., resource allocation information, HARQ related parameters, MCS),request(s) for CSI (e.g., aperiodic CQI reports), request(s) for an SRS,uplink power control commands for one or more cells, one or more timinginformation (e.g., TB transmission/reception timing, HARQ feedbacktiming, etc.), and/or the like. The DCI may indicate an uplink grantcomprising transmission parameters for one or more transport blocks. TheDCI may indicate a downlink assignment indicating parameters forreceiving one or more transport blocks. The DCI may be used by the basestation to initiate a contention-free random access at the wirelessdevice. The base station may send (e.g., transmit) DCI comprising a slotformat indicator (SFI) indicating a slot format. The base station maysend (e.g., transmit) DCI comprising a preemption indication indicatingthe PRB(s) and/or OFDM symbol(s) in which a wireless device may assumeno transmission is intended for the wireless device. The base stationmay send (e.g., transmit) DCI for group power control of the PUCCH, thePUSCH, and/or an SRS. DCI may correspond to an RNTI. The wireless devicemay obtain an RNTI after or in response to completing the initial access(e.g., C-RNTI). The base station may configure an RNTI for the wireless(e.g., CS-RNTI, TPC-CS-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI,TPC-SRS-RNTI, etc.). The wireless device may determine (e.g., compute)an RNTI (e.g., the wireless device may determine the RA-RNTI based onresources used for transmission of a preamble). An RNTI may have apre-configured value (e.g., P-RNTI or SI-RNTI). The wireless device maymonitor a group common search space which may be used by the basestation for sending (e.g., transmitting) DCIs that are intended for agroup of wireless devices. A group common DCI may correspond to an RNTIwhich is commonly configured for a group of wireless devices. Thewireless device may monitor a wireless device-specific search space. Awireless device specific DCI may correspond to an RNTI configured forthe wireless device.

A communications system (e.g., an NR system) may support a single beamoperation and/or a multi-beam operation. In a multi-beam operation, abase station may perform a downlink beam sweeping to provide coveragefor common control channels and/or downlink SS blocks, which maycomprise at least a PSS, a SSS, and/or PBCH. A wireless device maymeasure quality of a beam pair link using one or more RSs. One or moreSS blocks, or one or more CSI-RS resources (e.g., which may beassociated with a CSI-RS resource index (CRI)), and/or one or moreDM-RSs of a PBCH, may be used as an RS for measuring a quality of a beampair link. The quality of a beam pair link may be based on a referencesignal received power (RSRP) value, a reference signal received quality(RSRQ) value, and/or a CSI value measured on RS resources. The basestation may indicate whether an RS resource, used for measuring a beampair link quality, is quasi-co-located (QCLed) with DM-RSs of a controlchannel. An RS resource and DM-RSs of a control channel may be calledQCLed, for example, if channel characteristics from a transmission on anRS to a wireless device, and that from a transmission on a controlchannel to a wireless device, are similar or the same under a configuredcriterion. In a multi-beam operation, a wireless device may perform anuplink beam sweeping to access a cell.

A wireless device may be configured to monitor a PDCCH on one or morebeam pair links simultaneously, for example, depending on a capabilityof the wireless device. This monitoring may increase robustness againstbeam pair link blocking. A base station may send (e.g., transmit) one ormore messages to configure the wireless device to monitor the PDCCH onone or more beam pair links in different PDCCH OFDM symbols. A basestation may send (e.g., transmit) higher layer signaling (e.g., RRCsignaling) and/or a MAC CE comprising parameters related to the Rx beamsetting of the wireless device for monitoring the PDCCH on one or morebeam pair links. The base station may send (e.g., transmit) anindication of a spatial QCL assumption between an DL RS antenna port(s)(e.g., a cell-specific CSI-RS, a wireless device-specific CSI-RS, an SSblock, and/or a PBCH with or without DM-RSs of the PBCH) and/or DL RSantenna port(s) for demodulation of a DL control channel. Signaling forbeam indication for a PDCCH may comprise MAC CE signaling, RRCsignaling, DCI signaling, and/or specification-transparent and/orimplicit method, and/or any combination of signaling methods.

A base station may indicate spatial QCL parameters between DL RS antennaport(s) and DM-RS antenna port(s) of a DL data channel, for example, forreception of a unicast DL data channel. The base station may send (e.g.,transmit) DCI (e.g., downlink grants) comprising information indicatingthe RS antenna port(s). The information may indicate RS antenna port(s)that may be QCL-ed with the DM-RS antenna port(s). A different set ofDM-RS antenna port(s) for a DL data channel may be indicated as QCL witha different set of the RS antenna port(s).

FIG. 9A shows an example of beam sweeping in a DL channel. In anRRC_INACTIVE state or RRC_IDLE state, a wireless device may assume thatSS blocks form an SS burst 940, and an SS burst set 950. The SS burstset 950 may have a given periodicity. A base station 120 may send (e.g.,transmit) SS blocks in multiple beams, together forming a SS burst 940,for example, in a multi-beam operation. One or more SS blocks may besent (e.g., transmitted) on one beam. If multiple SS bursts 940 aretransmitted with multiple beams, SS bursts together may form SS burstset 950.

A wireless device may use CSI-RS for estimating a beam quality of a linkbetween a wireless device and a base station, for example, in the multibeam operation. A beam may be associated with a CSI-RS. A wirelessdevice may (e.g., based on a RSRP measurement on CSI-RS) report a beamindex, which may be indicated in a CRI for downlink beam selectionand/or associated with an RSRP value of a beam. A CSI-RS may be sent(e.g., transmitted) on a CSI-RS resource, which may comprise at leastone of: one or more antenna ports and/or one or more time and/orfrequency radio resources. A CSI-RS resource may be configured in acell-specific way such as by common RRC signaling, or in a wirelessdevice-specific way such as by dedicated RRC signaling and/or L1/L2signaling. Multiple wireless devices covered by a cell may measure acell-specific CSI-RS resource. A dedicated subset of wireless devicescovered by a cell may measure a wireless device-specific CSI-RSresource.

A CSI-RS resource may be sent (e.g., transmitted) periodically, usingaperiodic transmission, or using a multi-shot or semi-persistenttransmission. In a periodic transmission in FIG. 9A, a base station 120may send (e.g., transmit) configured CSI-RS resources 940 periodicallyusing a configured periodicity in a time domain. In an aperiodictransmission, a configured CSI-RS resource may be sent (e.g.,transmitted) in a dedicated time slot. In a multi-shot and/orsemi-persistent transmission, a configured CSI-RS resource may be sent(e.g., transmitted) within a configured period. Beams used for CSI-RStransmission may have a different beam width than beams used forSS-blocks transmission.

FIG. 9B shows an example of a beam management procedure, such as in anexample new radio network. The base station 120 and/or the wirelessdevice 110 may perform a downlink L1/L2 beam management procedure. Oneor more of the following downlink L1/L2 beam management procedures maybe performed within one or more wireless devices 110 and one or morebase stations 120. A P1 procedure 910 may be used to enable the wirelessdevice 110 to measure one or more Transmission (Tx) beams associatedwith the base station 120, for example, to support a selection of afirst set of Tx beams associated with the base station 120 and a firstset of Rx beam(s) associated with the wireless device 110. A basestation 120 may sweep a set of different Tx beams, for example, forbeamforming at a base station 120 (such as shown in the top row, in acounter-clockwise direction). A wireless device 110 may sweep a set ofdifferent Rx beams, for example, for beamforming at a wireless device110 (such as shown in the bottom row, in a clockwise direction). A P2procedure 920 may be used to enable a wireless device 110 to measure oneor more Tx beams associated with a base station 120, for example, topossibly change a first set of Tx beams associated with a base station120. A P2 procedure 920 may be performed on a possibly smaller set ofbeams (e.g., for beam refinement) than in the P1 procedure 910. A P2procedure 920 may be a special example of a P1 procedure 910. A P3procedure 930 may be used to enable a wireless device 110 to measure atleast one Tx beam associated with a base station 120, for example, tochange a first set of Rx beams associated with a wireless device 110.

A wireless device 110 may send (e.g., transmit) one or more beammanagement reports to a base station 120. In one or more beam managementreports, a wireless device 110 may indicate one or more beam pairquality parameters comprising one or more of: a beam identification; anRSRP; a Precoding Matrix Indicator (PMI), Channel Quality Indicator(CQI), and/or Rank Indicator (RI) of a subset of configured beams. Basedon one or more beam management reports, the base station 120 may send(e.g., transmit) to a wireless device 110 a signal indicating that oneor more beam pair links are one or more serving beams. The base station120 may send (e.g., transmit) the PDCCH and the PDSCH for a wirelessdevice 110 using one or more serving beams.

A communications network (e.g., a new radio network) may support aBandwidth Adaptation (BA). Receive and/or transmit bandwidths that maybe configured for a wireless device using a BA may not be large. Receiveand/or transmit bandwidth may not be as large as a bandwidth of a cell.Receive and/or transmit bandwidths may be adjustable. A wireless devicemay change receive and/or transmit bandwidths, for example, to reduce(e.g., shrink) the bandwidth(s) at (e.g., during) a period of lowactivity such as to save power. A wireless device may change a locationof receive and/or transmit bandwidths in a frequency domain, forexample, to increase scheduling flexibility. A wireless device maychange a subcarrier spacing, for example, to allow different services.

A Bandwidth Part (BWP) may comprise a subset of a total cell bandwidthof a cell. A base station may configure a wireless device with one ormore BWPs, for example, to achieve a BA. A base station may indicate, toa wireless device, which of the one or more (configured) BWPs is anactive BWP.

FIG. 10 shows an example of BWP configurations. BWPs may be configuredas follows: BWP1 (1010 and 1050) with a width of 40 MHz and subcarrierspacing of 15 kHz; BWP2 (1020 and 1040) with a width of 10 MHz andsubcarrier spacing of 15 kHz; BWP3 1030 with a width of 20 MHz andsubcarrier spacing of 60 kHz. Any number of BWP configurations maycomprise any other width and subcarrier spacing combination.

A wireless device, configured for operation in one or more BWPs of acell, may be configured by one or more higher layers (e.g., RRC layer).The wireless device may be configured for a cell with: a set of one ormore BWPs (e.g., at most four BWPs) for reception (e.g., a DL BWP set)in a DL bandwidth by at least one parameter DL-BWP; and a set of one ormore BWPs (e.g., at most four BWPs) for transmissions (e.g., UL BWP set)in an UL bandwidth by at least one parameter UL-BWP.

A base station may configure a wireless device with one or more UL andDL BWP pairs, for example, to enable BA on the PCell. To enable BA onSCells (e.g., for CA), a base station may configure a wireless device atleast with one or more DL BWPs (e.g., there may be none in an UL).

An initial active DL BWP may comprise at least one of a location andnumber of contiguous PRBs, a subcarrier spacing, or a cyclic prefix, forexample, for a CORESETs for at least one common search space. Foroperation on the PCell, one or more higher layer parameters may indicateat least one initial UL BWP for a random access procedure. If a wirelessdevice is configured with a secondary carrier on a primary cell, thewireless device may be configured with an initial BWP for random accessprocedure on a secondary carrier.

A wireless device may expect that a center frequency for a DL BWP may besame as a center frequency for a UL BWP, for example, for unpairedspectrum operation. A base station may semi-statically configure awireless device for a cell with one or more parameters, for example, fora DL BWP or an UL BWP in a set of one or more DL BWPs or one or more ULBWPs, respectively. The one or more parameters may indicate one or moreof following: a subcarrier spacing; a cyclic prefix; a number ofcontiguous PRBs; an index in the set of one or more DL BWPs and/or oneor more UL BWPs; a link between a DL BWP and an UL BWP from a set ofconfigured DL BWPs and UL BWPs; a DCI detection to a PDSCH receptiontiming; a PDSCH reception to a HARQ-ACK transmission timing value; a DCIdetection to a PUSCH transmission timing value; and/or an offset of afirst PRB of a DL bandwidth or an UL bandwidth, respectively, relativeto a first PRB of a bandwidth.

For a DL BWP in a set of one or more DL BWPs on a PCell, a base stationmay configure a wireless device with one or more control resource setsfor at least one type of common search space and/or one wirelessdevice-specific search space. A base station may not configure awireless device without a common search space on a PCell, or on aPSCell, in an active DL BWP. For an UL BWP in a set of one or more ULBWPs, a base station may configure a wireless device with one or moreresource sets for one or more PUCCH transmissions.

DCI may comprise a BWP indicator field. The BWP indicator field valuemay indicate an active DL BWP, from a configured DL BWP set, for one ormore DL receptions. The BWP indicator field value may indicate an activeUL BWP, from a configured UL BWP set, for one or more UL transmissions.

For a PCell, a base station may semi-statically configure a wirelessdevice with a default DL BWP among configured DL BWPs. If a wirelessdevice is not provided a default DL BWP, a default BWP may be an initialactive DL BWP.

A base station may configure a wireless device with a timer value for aPCell. A wireless device may start a timer (e.g., a BWP inactivitytimer), for example, if a wireless device detects DCI indicating anactive DL BWP, other than a default DL BWP, for a paired spectrumoperation, and/or if a wireless device detects DCI indicating an activeDL BWP or UL BWP, other than a default DL BWP or UL BWP, for an unpairedspectrum operation. The wireless device may increment the timer by aninterval of a first value (e.g., the first value may be 1 millisecond,0.5 milliseconds, or any other time duration), for example, if thewireless device does not detect DCI at (e.g., during) the interval for apaired spectrum operation or for an unpaired spectrum operation. Thetimer may expire at a time that the timer is equal to the timer value. Awireless device may switch to the default DL BWP from an active DL BWP,for example, if the timer expires.

A base station may semi-statically configure a wireless device with oneor more BWPs. A wireless device may switch an active BWP from a firstBWP to a second BWP, for example, after or in response to receiving DCIindicating the second BWP as an active BWP, and/or after or in responseto an expiry of BWP inactivity timer (e.g., the second BWP may be adefault BWP). FIG. 10 shows an example of three BWPs configured, BWP1(1010 and 1050), BWP2 (1020 and 1040), and BWP3 (1030). BWP2 (1020 and1040) may be a default BWP. BWP1 (1010) may be an initial active BWP. Awireless device may switch an active BWP from BWP1 1010 to BWP2 1020,for example, after or in response to an expiry of the BWP inactivitytimer. A wireless device may switch an active BWP from BWP2 1020 to BWP31030, for example, after or in response to receiving DCI indicating BWP31030 as an active BWP. Switching an active BWP from BWP3 1030 to BWP21040 and/or from BWP2 1040 to BWP1 1050 may be after or in response toreceiving DCI indicating an active BWP, and/or after or in response toan expiry of BWP inactivity timer.

Wireless device procedures on a secondary cell may be same as on aprimary cell using the timer value for the secondary cell and thedefault DL BWP for the secondary cell, for example, if a wireless deviceis configured for a secondary cell with a default DL BWP amongconfigured DL BWPs and a timer value. A wireless device may use anindicated DL BWP and an indicated UL BWP on a secondary cell as arespective first active DL BWP and first active UL BWP on a secondarycell or carrier, for example, if a base station configures a wirelessdevice with a first active DL BWP and a first active UL BWP on asecondary cell or carrier.

FIG. 11A and FIG. 11B show packet flows using a multi connectivity(e.g., dual connectivity, multi connectivity, tight interworking, and/orthe like). FIG. 11A shows an example of a protocol structure of awireless device 110 (e.g., UE) with CA and/or multi connectivity. FIG.11B shows an example of a protocol structure of multiple base stationswith CA and/or multi connectivity. The multiple base stations maycomprise a master node, MN 1130 (e.g., a master node, a master basestation, a master gNB, a master eNB, and/or the like) and a secondarynode, SN 1150 (e.g., a secondary node, a secondary base station, asecondary gNB, a secondary eNB, and/or the like). A master node 1130 anda secondary node 1150 may co-work to communicate with a wireless device110.

If multi connectivity is configured for a wireless device 110, thewireless device 110, which may support multiple reception and/ortransmission functions in an RRC connected state, may be configured toutilize radio resources provided by multiple schedulers of a multiplebase stations. Multiple base stations may be inter-connected via anon-ideal or ideal backhaul (e.g., Xn interface, X2 interface, and/orthe like). A base station involved in multi connectivity for a certainwireless device may perform at least one of two different roles: a basestation may act as a master base station or act as a secondary basestation. In multi connectivity, a wireless device may be connected toone master base station and one or more secondary base stations. Amaster base station (e.g., the MN 1130) may provide a master cell group(MCG) comprising a primary cell and/or one or more secondary cells for awireless device (e.g., the wireless device 110). A secondary basestation (e.g., the SN 1150) may provide a secondary cell group (SCG)comprising a primary secondary cell (PSCell) and/or one or moresecondary cells for a wireless device (e.g., the wireless device 110).

In multi connectivity, a radio protocol architecture that a bearer usesmay depend on how a bearer is setup. Three different types of bearersetup options may be supported: an MCG bearer, an SCG bearer, and/or asplit bearer. A wireless device may receive and/or send (e.g., transmit)packets of an MCG bearer via one or more cells of the MCG. A wirelessdevice may receive and/or send (e.g., transmit) packets of an SCG bearervia one or more cells of an SCG. Multi-connectivity may indicate havingat least one bearer configured to use radio resources provided by thesecondary base station. Multi-connectivity may or may not be configuredand/or implemented.

A wireless device (e.g., wireless device 110) may send (e.g., transmit)and/or receive: packets of an MCG bearer via an SDAP layer (e.g., SDAP1110), a PDCP layer (e.g., NR PDCP 1111), an RLC layer (e.g., MN RLC1114), and a MAC layer (e.g., MN MAC 1118); packets of a split bearervia an SDAP layer (e.g., SDAP 1110), a PDCP layer (e.g., NR PDCP 1112),one of a master or secondary RLC layer (e.g., MN RLC 1115, SN RLC 1116),and one of a master or secondary MAC layer (e.g., MN MAC 1118, SN MAC1119); and/or packets of an SCG bearer via an SDAP layer (e.g., SDAP1110), a PDCP layer (e.g., NR PDCP 1113), an RLC layer (e.g., SN RLC1117), and a MAC layer (e.g., MN MAC 1119).

A master base station (e.g., MN 1130) and/or a secondary base station(e.g., SN 1150) may send (e.g., transmit) and/or receive: packets of anMCG bearer via a master or secondary node SDAP layer (e.g., SDAP 1120,SDAP 1140), a master or secondary node PDCP layer (e.g., NR PDCP 1121,NR PDCP 1142), a master node RLC layer (e.g., MN RLC 1124, MN RLC 1125),and a master node MAC layer (e.g., MN MAC 1128); packets of an SCGbearer via a master or secondary node SDAP layer (e.g., SDAP 1120, SDAP1140), a master or secondary node PDCP layer (e.g., NR PDCP 1122, NRPDCP 1143), a secondary node RLC layer (e.g., SN RLC 1146, SN RLC 1147),and a secondary node MAC layer (e.g., SN MAC 1148); packets of a splitbearer via a master or secondary node SDAP layer (e.g., SDAP 1120, SDAP1140), a master or secondary node PDCP layer (e.g., NR PDCP 1123, NRPDCP 1141), a master or secondary node RLC layer (e.g., MN RLC 1126, SNRLC 1144, SN RLC 1145, MN RLC 1127), and a master or secondary node MAClayer (e.g., MN MAC 1128, SN MAC 1148).

In multi connectivity, a wireless device may configure multiple MACentities, such as one MAC entity (e.g., MN MAC 1118) for a master basestation, and other MAC entities (e.g., SN MAC 1119) for a secondary basestation. In multi-connectivity, a configured set of serving cells for awireless device may comprise two subsets: an MCG comprising servingcells of a master base station, and SCGs comprising serving cells of asecondary base station. For an SCG, one or more of followingconfigurations may be used. At least one cell of an SCG may have aconfigured UL CC and at least one cell of a SCG, named as primarysecondary cell (e.g., PSCell, PCell of SCG, PCell), and may beconfigured with PUCCH resources. If an SCG is configured, there may beat least one SCG bearer or one split bearer. After or upon detection ofa physical layer problem or a random access problem on a PSCell, or anumber of NR RLC retransmissions has been reached associated with theSCG, or after or upon detection of an access problem on a PSCellassociated with (e.g., during) a SCG addition or an SCG change: an RRCconnection re-establishment procedure may not be triggered, ULtransmissions towards cells of an SCG may be stopped, a master basestation may be informed by a wireless device of a SCG failure type, a DLdata transfer over a master base station may be maintained (e.g., for asplit bearer). An NR RLC acknowledged mode (AM) bearer may be configuredfor a split bearer. A PCell and/or a PSCell may not be de-activated. APSCell may be changed with a SCG change procedure (e.g., with securitykey change and a RACH procedure). A bearer type change between a splitbearer and a SCG bearer, and/or simultaneous configuration of a SCG anda split bearer, may or may not be supported.

With respect to interactions between a master base station and asecondary base stations for multi-connectivity, one or more of thefollowing may be used. A master base station and/or a secondary basestation may maintain RRM measurement configurations of a wirelessdevice. A master base station may determine (e.g., based on receivedmeasurement reports, traffic conditions, and/or bearer types) to requesta secondary base station to provide additional resources (e.g., servingcells) for a wireless device. After or upon receiving a request from amaster base station, a secondary base station may create and/or modify acontainer that may result in a configuration of additional serving cellsfor a wireless device (or decide that the secondary base station has noresource available to do so). For a wireless device capabilitycoordination, a master base station may provide (e.g., all or a part of)an AS configuration and wireless device capabilities to a secondary basestation. A master base station and a secondary base station may exchangeinformation about a wireless device configuration such as by using RRCcontainers (e.g., inter-node messages) carried via Xn messages. Asecondary base station may initiate a reconfiguration of the secondarybase station existing serving cells (e.g., PUCCH towards the secondarybase station). A secondary base station may decide which cell is aPSCell within a SCG. A master base station may or may not change contentof RRC configurations provided by a secondary base station. A masterbase station may provide recent (and/or the latest) measurement resultsfor SCG cell(s), for example, if an SCG addition and/or an SCG SCelladdition occurs. A master base station and secondary base stations mayreceive information of SFN and/or subframe offset of each other from anOAM and/or via an Xn interface (e.g., for a purpose of DRX alignmentand/or identification of a measurement gap). Dedicated RRC signaling maybe used for sending required system information of a cell as for CA, forexample, if adding a new SCG SCell, except for an SFN acquired from anMIB of a PSCell of a SCG.

FIG. 12 shows an example of a random access procedure. One or moreevents may trigger a random access procedure. For example, one or moreevents may be at least one of following: initial access from RRC_IDLE,RRC connection re-establishment procedure, handover, DL or UL dataarrival in (e.g., during) a state of RRC_CONNECTED (e.g., if ULsynchronization status is non-synchronized), transition fromRRC_Inactive, and/or request for other system information. A PDCCHorder, a MAC entity, and/or a beam failure indication may initiate arandom access procedure.

A random access procedure may comprise or be one of at least acontention based random access procedure and/or a contention free randomaccess procedure. A contention based random access procedure maycomprise one or more Msg 1 1220 transmissions, one or more Msg2 1230transmissions, one or more Msg3 1240 transmissions, and contentionresolution 1250. A contention free random access procedure may compriseone or more Msg 1 1220 transmissions and one or more Msg2 1230transmissions. One or more of Msg 1 1220, Msg 2 1230, Msg 3 1240, and/orcontention resolution 1250 may be transmitted in the same step. Atwo-step random access procedure, for example, may comprise a firsttransmission (e.g., Msg A) and a second transmission (e.g., Msg B). Thefirst transmission (e.g., Msg A) may comprise transmitting, by awireless device (e.g., wireless device 110) to a base station (e.g.,base station 120), one or more messages indicating an equivalent and/orsimilar contents of Msg 1 1220 and Msg3 1240 of a four-step randomaccess procedure. The second transmission (e.g., Msg B) may comprisetransmitting, by the base station (e.g., base station 120) to a wirelessdevice (e.g., wireless device 110) after or in response to the firstmessage, one or more messages indicating an equivalent and/or similarcontent of Msg2 1230 and contention resolution 1250 of a four-steprandom access procedure.

A base station may send (e.g., transmit, unicast, multicast, broadcast,etc.), to a wireless device, a RACH configuration 1210 via one or morebeams. The RACH configuration 1210 may comprise one or more parametersindicating at least one of following: an available set of PRACHresources for a transmission of a random access preamble, initialpreamble power (e.g., random access preamble initial received targetpower), an RSRP threshold for a selection of a SS block andcorresponding PRACH resource, a power-ramping factor (e.g., randomaccess preamble power ramping step), a random access preamble index, amaximum number of preamble transmissions, preamble group A and group B,a threshold (e.g., message size) to determine the groups of randomaccess preambles, a set of one or more random access preambles for asystem information request and corresponding PRACH resource(s) (e.g., ifany), a set of one or more random access preambles for a beam failurerecovery request and corresponding PRACH resource(s) (e.g., if any), atime window to monitor RA response(s), a time window to monitorresponse(s) on a beam failure recovery request, and/or a contentionresolution timer.

The Msg1 1220 may comprise one or more transmissions of a random accesspreamble. For a contention based random access procedure, a wirelessdevice may select an SS block with an RSRP above the RSRP threshold. Ifrandom access preambles group B exists, a wireless device may select oneor more random access preambles from a group A or a group B, forexample, depending on a potential Msg3 1240 size. If a random accesspreambles group B does not exist, a wireless device may select the oneor more random access preambles from a group A. A wireless device mayselect a random access preamble index randomly (e.g., with equalprobability or a normal distribution) from one or more random accesspreambles associated with a selected group. If a base stationsemi-statically configures a wireless device with an association betweenrandom access preambles and SS blocks, the wireless device may select arandom access preamble index randomly with equal probability from one ormore random access preambles associated with a selected SS block and aselected group.

A wireless device may initiate a contention free random accessprocedure, for example, based on a beam failure indication from a lowerlayer. A base station may semi-statically configure a wireless devicewith one or more contention free PRACH resources for a beam failurerecovery request associated with at least one of SS blocks and/orCSI-RSs. A wireless device may select a random access preamble indexcorresponding to a selected SS block or a CSI-RS from a set of one ormore random access preambles for a beam failure recovery request, forexample, if at least one of the SS blocks with an RSRP above a firstRSRP threshold amongst associated SS blocks is available, and/or if atleast one of CSI-RSs with a RSRP above a second RSRP threshold amongstassociated CSI-RSs is available.

A wireless device may receive, from a base station, a random accesspreamble index via PDCCH or RRC for a contention free random accessprocedure. The wireless device may select a random access preambleindex, for example, if a base station does not configure a wirelessdevice with at least one contention free PRACH resource associated withSS blocks or CSI-RS. The wireless device may select the at least one SSblock and/or select a random access preamble corresponding to the atleast one SS block, for example, if a base station configures thewireless device with one or more contention free PRACH resourcesassociated with SS blocks and/or if at least one SS block with a RSRPabove a first RSRP threshold amongst associated SS blocks is available.The wireless device may select the at least one CSI-RS and/or select arandom access preamble corresponding to the at least one CSI-RS, forexample, if a base station configures a wireless device with one or morecontention free PRACH resources associated with CSI-RSs and/or if atleast one CSI-RS with a RSRP above a second RSPR threshold amongst theassociated CSI-RSs is available.

A wireless device may perform one or more Msg1 1220 transmissions, forexample, by sending (e.g., transmitting) the selected random accesspreamble. The wireless device may determine a PRACH occasion from one ormore PRACH occasions corresponding to a selected SS block, for example,if the wireless device selects an SS block and is configured with anassociation between one or more PRACH occasions and/or one or more SSblocks. The wireless device may determine a PRACH occasion from one ormore PRACH occasions corresponding to a selected CSI-RS, for example, ifthe wireless device selects a CSI-RS and is configured with anassociation between one or more PRACH occasions and one or more CSI-RSs.The wireless device may send (e.g., transmit), to a base station, aselected random access preamble via a selected PRACH occasions. Thewireless device may determine a transmit power for a transmission of aselected random access preamble at least based on an initial preamblepower and a power-ramping factor. The wireless device may determine anRA-RNTI associated with a selected PRACH occasion in which a selectedrandom access preamble is sent (e.g., transmitted). The wireless devicemay not determine an RA-RNTI for a beam failure recovery request. Thewireless device may determine an RA-RNTI at least based on an index of afirst OFDM symbol, an index of a first slot of a selected PRACHoccasions, and/or an uplink carrier index for a transmission of Msg11220.

A wireless device may receive, from a base station, a random accessresponse, Msg 2 1230. The wireless device may start a time window (e.g.,ra-ResponseWindow) to monitor a random access response. For a beamfailure recovery procedure, the base station may configure the wirelessdevice with a different time window (e.g., bfr-ResponseWindow) tomonitor response to on a beam failure recovery request. The wirelessdevice may start a time window (e.g., ra-ResponseWindow orbfr-ResponseWindow) at a start of a first PDCCH occasion, for example,after a fixed duration of one or more symbols from an end of a preambletransmission. If the wireless device sends (e.g., transmits) multiplepreambles, the wireless device may start a time window at a start of afirst PDCCH occasion after a fixed duration of one or more symbols froman end of a first preamble transmission. The wireless device may monitora PDCCH of a cell for at least one random access response identified bya RA-RNTI, or for at least one response to a beam failure recoveryrequest identified by a C-RNTI, at a time that a timer for a time windowis running.

A wireless device may determine that a reception of random accessresponse is successful, for example, if at least one random accessresponse comprises a random access preamble identifier corresponding toa random access preamble sent (e.g., transmitted) by the wirelessdevice. The wireless device may determine that the contention freerandom access procedure is successfully completed, for example, if areception of a random access response is successful. The wireless devicemay determine that a contention free random access procedure issuccessfully complete, for example, if a contention-free random accessprocedure is triggered for a beam failure recovery request and if aPDCCH transmission is addressed to a C-RNTI. The wireless device maydetermine that the random access procedure is successfully completed,and may indicate a reception of an acknowledgement for a systeminformation request to upper layers, for example, if at least one randomaccess response comprises a random access preamble identifier. Thewireless device may stop sending (e.g., transmitting) remainingpreambles (if any) after or in response to a successful reception of acorresponding random access response, for example, if the wirelessdevice has signaled multiple preamble transmissions.

The wireless device may perform one or more Msg 3 1240 transmissions,for example, after or in response to a successful reception of randomaccess response (e.g., for a contention based random access procedure).The wireless device may adjust an uplink transmission timing, forexample, based on a timing advanced command indicated by a random accessresponse. The wireless device may send (e.g., transmit) one or moretransport blocks, for example, based on an uplink grant indicated by arandom access response. Subcarrier spacing for PUSCH transmission forMsg3 1240 may be provided by at least one higher layer (e.g., RRC)parameter. The wireless device may send (e.g., transmit) a random accesspreamble via a PRACH, and Msg3 1240 via PUSCH, on the same cell. A basestation may indicate an UL BWP for a PUSCH transmission of Msg3 1240 viasystem information block. The wireless device may use HARQ for aretransmission of Msg 3 1240.

Multiple wireless devices may perform Msg 1 1220, for example, bysending (e.g., transmitting) the same preamble to a base station. Themultiple wireless devices may receive, from the base station, the samerandom access response comprising an identity (e.g., TC-RNTI).Contention resolution (e.g., comprising the wireless device 110receiving contention resolution 1250) may be used to increase thelikelihood that a wireless device does not incorrectly use an identityof another wireless device. The contention resolution 1250 may be basedon, for example, a C-RNTI on a PDCCH, and/or a wireless devicecontention resolution identity on a DL-SCH. If a base station assigns aC-RNTI to a wireless device, the wireless device may perform contentionresolution (e.g., comprising receiving contention resolution 1250), forexample, based on a reception of a PDCCH transmission that is addressedto the C-RNTI. The wireless device may determine that contentionresolution is successful, and/or that a random access procedure issuccessfully completed, for example, after or in response to detecting aC-RNTI on a PDCCH. If a wireless device has no valid C-RNTI, acontention resolution may be addressed by using a TC-RNTI. If a MAC PDUis successfully decoded and a MAC PDU comprises a wireless devicecontention resolution identity MAC CE that matches or otherwisecorresponds with the CCCH SDU sent (e.g., transmitted) in Msg3 1250, thewireless device may determine that the contention resolution (e.g.,comprising contention resolution 1250) is successful and/or the wirelessdevice may determine that the random access procedure is successfullycompleted.

FIG. 13 shows an example structure for MAC entities. A wireless devicemay be configured to operate in a multi-connectivity mode. A wirelessdevice in RRC_CONNECTED with multiple Rx/Tx may be configured to utilizeradio resources provided by multiple schedulers that may be located in aplurality of base stations. The plurality of base stations may beconnected via a non-ideal or ideal backhaul over the Xn interface. Abase station in a plurality of base stations may act as a master basestation or as a secondary base station. A wireless device may beconnected to and/or in communication with, for example, one master basestation and one or more secondary base stations. A wireless device maybe configured with multiple MAC entities, for example, one MAC entityfor a master base station, and one or more other MAC entities forsecondary base station(s). A configured set of serving cells for awireless device may comprise two subsets: an MCG comprising servingcells of a master base station, and one or more SCGs comprising servingcells of a secondary base station(s). FIG. 13 shows an example structurefor MAC entities in which a MCG and a SCG are configured for a wirelessdevice.

At least one cell in a SCG may have a configured UL CC. A cell of the atleast one cell may comprise a PSCell or a PCell of a SCG, or a PCell. APSCell may be configured with PUCCH resources. There may be at least oneSCG bearer, or one split bearer, for a SCG that is configured. After orupon detection of a physical layer problem or a random access problem ona PSCell, after or upon reaching a number of RLC retransmissionsassociated with the SCG, and/or after or upon detection of an accessproblem on a PSCell associated with (e.g., during) a SCG addition or aSCG change: an RRC connection re-establishment procedure may not betriggered, UL transmissions towards cells of a SCG may be stopped,and/or a master base station may be informed by a wireless device of aSCG failure type and DL data transfer over a master base station may bemaintained.

A MAC sublayer may provide services such as data transfer and radioresource allocation to upper layers (e.g., 1310 or 1320). A MAC sublayermay comprise a plurality of MAC entities (e.g., 1350 and 1360). A MACsublayer may provide data transfer services on logical channels. Toaccommodate different kinds of data transfer services, multiple types oflogical channels may be defined. A logical channel may support transferof a particular type of information. A logical channel type may bedefined by what type of information (e.g., control or data) istransferred. BCCH, PCCH, CCCH and/or DCCH may be control channels, andDTCH may be a traffic channel. A first MAC entity (e.g., 1310) mayprovide services on PCCH, BCCH, CCCH, DCCH, DTCH, and/or MAC controlelements. A second MAC entity (e.g., 1320) may provide services on BCCH,DCCH, DTCH, and/or MAC control elements.

A MAC sublayer may expect from a physical layer (e.g., 1330 or 1340)services such as data transfer services, signaling of HARQ feedback,and/or signaling of scheduling request or measurements (e.g., CQI). Indual connectivity, two MAC entities may be configured for a wirelessdevice: one for a MCG and one for a SCG. A MAC entity of a wirelessdevice may handle a plurality of transport channels. A first MAC entitymay handle first transport channels comprising a PCCH of a MCG, a firstBCH of the MCG, one or more first DL-SCHs of the MCG, one or more firstUL-SCHs of the MCG, and/or one or more first RACHs of the MCG. A secondMAC entity may handle second transport channels comprising a second BCHof a SCG, one or more second DL-SCHs of the SCG, one or more secondUL-SCHs of the SCG, and/or one or more second RACHs of the SCG.

If a MAC entity is configured with one or more SCells, there may bemultiple DL-SCHs, multiple UL-SCHs, and/or multiple RACHs per MACentity. There may be one DL-SCH and/or one UL-SCH on an SpCell. Theremay be one DL-SCH, zero or one UL-SCH, and/or zero or one RACH for anSCell. A DL-SCH may support receptions using different numerologiesand/or TTI duration within a MAC entity. A UL-SCH may supporttransmissions using different numerologies and/or TTI duration withinthe MAC entity.

A MAC sublayer may support different functions. The MAC sublayer maycontrol these functions with a control (e.g., Control 1355 and/orControl 1365) element. Functions performed by a MAC entity may compriseone or more of: mapping between logical channels and transport channels(e.g., in uplink or downlink), multiplexing (e.g., (De-) Multiplexing1352 and/or (De-) Multiplexing 1362) of MAC SDUs from one or differentlogical channels onto transport blocks (TBs) to be delivered to thephysical layer on transport channels (e.g., in uplink), demultiplexing(e.g., (De-) Multiplexing 1352 and/or (De-) Multiplexing 1362) of MACSDUs to one or different logical channels from transport blocks (TBs)delivered from the physical layer on transport channels (e.g., indownlink), scheduling information reporting (e.g., in uplink), errorcorrection through HARQ in uplink and/or downlink (e.g., 1363), andlogical channel prioritization in uplink (e.g., Logical ChannelPrioritization 1351 and/or Logical Channel Prioritization 1361). A MACentity may handle a random access process (e.g., Random Access Control1354 and/or Random Access Control 1364).

FIG. 14 shows an example of a RAN architecture comprising one or morebase stations. A protocol stack (e.g., RRC, SDAP, PDCP, RLC, MAC, and/orPHY) may be supported at a node. A base station (e.g., gNB 120A and/or120B) may comprise a base station central unit (CU) (e.g., gNB-CU 1420Aor 1420B) and at least one base station distributed unit (DU) (e.g.,gNB-DU 1430A, 1430B, 1430C, and/or 1430D), for example, if a functionalsplit is configured. Upper protocol layers of a base station may belocated in a base station CU, and lower layers of the base station maybe located in the base station DUs. An F1 interface (e.g., CU-DUinterface) connecting a base station CU and base station DUs may be anideal or non-ideal backhaul. F1-C may provide a control plane connectionover an F1 interface, and F1-U may provide a user plane connection overthe F1 interface. An Xn interface may be configured between base stationCUs.

A base station CU may comprise an RRC function, an SDAP layer, and/or aPDCP layer. Base station DUs may comprise an RLC layer, a MAC layer,and/or a PHY layer. Various functional split options between a basestation CU and base station DUs may be possible, for example, bylocating different combinations of upper protocol layers (e.g., RANfunctions) in a base station CU and different combinations of lowerprotocol layers (e.g., RAN functions) in base station DUs. A functionalsplit may support flexibility to move protocol layers between a basestation CU and base station DUs, for example, depending on servicerequirements and/or network environments.

Functional split options may be configured per base station, per basestation CU, per base station DU, per wireless device, per bearer, perslice, and/or with other granularities. In a per base station CU split,a base station CU may have a fixed split option, and base station DUsmay be configured to match a split option of a base station CU. In a perbase station DU split, a base station DU may be configured with adifferent split option, and a base station CU may provide differentsplit options for different base station DUs. In a per wireless devicesplit, a base station (e.g., a base station CU and at least one basestation DUs) may provide different split options for different wirelessdevices. In a per bearer split, different split options may be utilizedfor different bearers. In a per slice splice, different split optionsmay be used for different slices.

FIG. 15 shows example RRC state transitions of a wireless device. Awireless device may be in at least one RRC state among an RRC connectedstate (e.g., RRC Connected 1530, RRC_Connected, etc.), an RRC idle state(e.g., RRC Idle 1510, RRC_Idle, etc.), and/or an RRC inactive state(e.g., RRC Inactive 1520, RRC_Inactive, etc.). In an RRC connectedstate, a wireless device may have at least one RRC connection with atleast one base station (e.g., gNB and/or eNB), which may have a contextof the wireless device (e.g., UE context). A wireless device context(e.g., UE context) may comprise at least one of an access stratumcontext, one or more radio link configuration parameters, bearer (e.g.,data radio bearer (DRB), signaling radio bearer (SRB), logical channel,QoS flow, PDU session, and/or the like) configuration information,security information, PHY/MAC/RLC/PDCP/SDAP layer configurationinformation, and/or the like configuration information for a wirelessdevice. In an RRC idle state, a wireless device may not have an RRCconnection with a base station, and a context of the wireless device maynot be stored in a base station. In an RRC inactive state, a wirelessdevice may not have an RRC connection with a base station. A context ofa wireless device may be stored in a base station, which may comprise ananchor base station (e.g., a last serving base station).

A wireless device may transition an RRC state (e.g., UE RRC state)between an RRC idle state and an RRC connected state in both ways (e.g.,connection release 1540 or connection establishment 1550; and/orconnection reestablishment) and/or between an RRC inactive state and anRRC connected state in both ways (e.g., connection inactivation 1570 orconnection resume 1580). A wireless device may transition its RRC statefrom an RRC inactive state to an RRC idle state (e.g., connectionrelease 1560).

An anchor base station may be a base station that may keep a context ofa wireless device (e.g., UE context) at least at (e.g., during) a timeperiod that the wireless device stays in a RAN notification area (RNA)of an anchor base station, and/or at (e.g., during) a time period thatthe wireless device stays in an RRC inactive state. An anchor basestation may comprise a base station that a wireless device in an RRCinactive state was most recently connected to in a latest RRC connectedstate, and/or a base station in which a wireless device most recentlyperformed an RNA update procedure. An RNA may comprise one or more cellsoperated by one or more base stations. A base station may belong to oneor more RNAs. A cell may belong to one or more RNAs.

A wireless device may transition, in a base station, an RRC state (e.g.,UE RRC state) from an RRC connected state to an RRC inactive state. Thewireless device may receive RNA information from the base station. RNAinformation may comprise at least one of an RNA identifier, one or morecell identifiers of one or more cells of an RNA, a base stationidentifier, an IP address of the base station, an AS context identifierof the wireless device, a resume identifier, and/or the like.

An anchor base station may broadcast a message (e.g., RAN pagingmessage) to base stations of an RNA to reach to a wireless device in anRRC inactive state. The base stations receiving the message from theanchor base station may broadcast and/or multicast another message(e.g., paging message) to wireless devices in their coverage area, cellcoverage area, and/or beam coverage area associated with the RNA via anair interface.

A wireless device may perform an RNA update (RNAU) procedure, forexample, if the wireless device is in an RRC inactive state and movesinto a new RNA. The RNAU procedure may comprise a random accessprocedure by the wireless device and/or a context retrieve procedure(e.g., UE context retrieve). A context retrieve procedure may comprise:receiving, by a base station from a wireless device, a random accesspreamble; and requesting and/or receiving (e.g., fetching), by a basestation, a context of the wireless device (e.g., UE context) from an oldanchor base station. The requesting and/or receiving (e.g., fetching)may comprise: sending a retrieve context request message (e.g., UEcontext request message) comprising a resume identifier to the oldanchor base station and receiving a retrieve context response messagecomprising the context of the wireless device from the old anchor basestation.

A wireless device in an RRC inactive state may select a cell to camp onbased on at least a measurement result for one or more cells, a cell inwhich a wireless device may monitor an RNA paging message, and/or a corenetwork paging message from a base station. A wireless device in an RRCinactive state may select a cell to perform a random access procedure toresume an RRC connection and/or to send (e.g., transmit) one or morepackets to a base station (e.g., to a network). The wireless device mayinitiate a random access procedure to perform an RNA update procedure,for example, if a cell selected belongs to a different RNA from an RNAfor the wireless device in an RRC inactive state. The wireless devicemay initiate a random access procedure to send (e.g., transmit) one ormore packets to a base station of a cell that the wireless deviceselects, for example, if the wireless device is in an RRC inactive stateand has one or more packets (e.g., in a buffer) to send (e.g., transmit)to a network. A random access procedure may be performed with twomessages (e.g., 2-stage or 2-step random access) and/or four messages(e.g., 4-stage or 4-step random access) between the wireless device andthe base station.

A base station receiving one or more uplink packets from a wirelessdevice in an RRC inactive state may request and/or receive (e.g., fetch)a context of a wireless device (e.g., UE context), for example, bysending (e.g., transmitting) a retrieve context request message for thewireless device to an anchor base station of the wireless device basedon at least one of an AS context identifier, an RNA identifier, a basestation identifier, a resume identifier, and/or a cell identifierreceived from the wireless device. A base station may send (e.g.,transmit) a path switch request for a wireless device to a core networkentity (e.g., AMF, MME, and/or the like), for example, after or inresponse to requesting and/or receiving (e.g., fetching) a context. Acore network entity may update a downlink tunnel endpoint identifier forone or more bearers established for the wireless device between a userplane core network entity (e.g., UPF, S-GW, and/or the like) and a RANnode (e.g., the base station), such as by changing a downlink tunnelendpoint identifier from an address of the anchor base station to anaddress of the base station).

A base station may configure a wireless device with one or more resourcesets (e.g., SRS resource sets), for example, via a parameter (e.g.,higher layer parameter, SRS-ResourceSet). The base station may configurethe wireless device with one or more SRS resources, for example, via aparameter (e.g., higher layer parameter, SRS-Resource) and for an SRSresource set of the one or more Resource sets (e.g., SRS resource sets).The wireless device may indicate a value (e.g., maximum, minimum, or anyquantity) of a quantity of the one or more SRS resources to the basestation (e.g., by SRS_capability). The base station may configure anapplicability of the SRS resource set, for example, via a parameter(e.g., a parameter in the higher layer parameter SRS-ResourceSet).

The wireless device may send (e.g., transmit) an SRS resource of the oneor more SRS resources in each SRS resource set (e.g., simultaneously, inseries, etc.), for example, based on a management parameter being set toa value (e.g., higher layer parameter, BeamManagement). The wirelessdevice may determine that an SRS resource of the one or more SRSresources in each SRS resource set has the same/similar time domainbehavior in a same/similar BWP (e.g., uplink BWP). The wireless devicemay send (e.g., transmit) the SRS resource of the one or more SRSresources in each SRS resource set in the same/similar BWP (e.g.,simultaneously, in series, etc.), for example, based on the determining.

The wireless device may send (e.g., transmit) an SRS resource in each ofthe one or more Resource sets (e.g., SRS resource sets) (e.g.,simultaneously, in series, etc.), for example, based on the managementparameter being set to a value (e.g., higher layer parameter,BeamManagement). The wireless device may determine that the SRS resourcein each of the one or more Resource sets (e.g., SRS resource sets) has asame/similar time domain behavior in a same/similar BWP (e.g., uplinkBWP). The wireless device may send (e.g., transmit) the SRS resource ineach of the one or more Resource sets (e.g., SRS resource sets) in thesame/similar BWP (e.g., simultaneously, in series, etc.), for example,based on or in response to the determining.

The wireless device may send (e.g., transmit) an SRS resource in each ofone or more Resource sets (e.g., SRS resource sets) (e.g.,simultaneously, in series, etc.), for example, based on a parameterbeing set to a value (e.g., higher layer parameter, BeamManagement). Thewireless device may determine that the SRS resource in each of the oneor more Resource sets (e.g., SRS resource sets) may have a same/similartime domain behavior in a same/similar BWP (e.g., uplink BWP). Thewireless device may send (e.g., transmit) the SRS resource in each ofthe one or more Resource sets (e.g., SRS resource sets) in thesame/similar BWP (e.g., simultaneously, in series, etc.).

The one or more Resource sets (e.g., SRS resource sets) may comprise afirst SRS resource set and a second SRS resource set. The first SRSresource set may comprise one or more first SRS resources. The one ormore first SRS resources may comprise a first SRS resource and a secondSRS resource. The second SRS resource set may comprise one or moresecond SRS resources. The one or more second SRS resources may comprisea third SRS resource and a fourth SRS resource.

A first time domain behavior of the first SRS resource and a third timedomain behavior of the third SRS resource may be the same/similar in aBWP. The wireless device may send (e.g., transmit), via the BWP, thefirst SRS resource of the first SRS resource set and the third SRSresource of the second SRS resource set (e.g., simultaneously, inseries, etc.), for example, based on a parameter being set to a value(e.g., higher layer parameter, BeamManagement) and/or based on the firsttime domain behavior of the first SRS resource and the third time domainbehavior of the third SRS resource being the same/similar.

A first time domain behavior of the first SRS resource and a fourth timedomain behavior of the fourth SRS resource may be different via a BWP.The wireless device may not send (e.g., transmit), via the BWP, thefirst SRS resource of the first SRS resource set and the fourth SRSresource of the second SRS resource set (e.g., simultaneously, inseries, etc.), for example, based on or in response to the first timedomain behavior of the first SRS resource and the fourth time domainbehavior of the fourth SRS resource being different.

A second time domain behavior of the second SRS resource and a fourthtime domain behavior of the fourth SRS resource may be the same/similarvia a BWP. The wireless device may send (e.g., transmit), via the BWP,the second SRS resource of the first SRS resource set and the fourth SRSresource of the second SRS resource set (e.g., simultaneously, inseries, etc.), for example, based on a parameter being set to a value(e.g., higher layer parameter, BeamManagement) and based on or inresponse to the second time domain behavior of the second SRS resourceand the fourth time domain behavior of the fourth SRS resource being thesame/similar.

A second time domain behavior of the second SRS resource and a thirdtime domain behavior of the third SRS resource may be different via aBWP. The wireless device may not send (e.g., transmit), via the BWP, thesecond SRS resource of the first SRS resource set and the third SRSresource of the second SRS resource set (e.g., simultaneously, inseries, etc.), for example, based on a parameter being set to a value(e.g., higher layer parameter, BeamManagement) and/or the second timedomain behavior of the second SRS resource and the third time domainbehavior of the third SRS resource being different.

A parameter (e.g., higher layer parameter, SRS-Resource) may indicate aconfiguration (semi-statically or otherwise) of at least one of: an SRSresource index (e.g., indicated by a parameter such as srs-ResourceId)indicating a configuration of an SRS resource; a time domain behavior ofthe configuration of the SRS resource (e.g., indicated by a parametersuch as resourceType); an SRS sequence ID (e.g., indicated by aparameter such as sequenceId); and/or a configuration of a spatialrelation between a reference RS and a target SRS. The base station mayconfigure the wireless device with a spatial relation parameter (e.g.,higher layer parameter, spatialRelationInfo). The spatial relationparameter (e.g., higher layer parameter, spatialRelationInfo) maycomprise an index (ID) of the reference RS. Domain behavior of an SRSresource may comprise a periodic transmission, a semi-persistenttransmission, and/or an aperiodic SRS transmission. A time domainbehavior of an SRS resource may comprise a transmission periodicity, atransmission offset of the SRS resource, or other behavior.

A wireless device may be configured with one or more SRS resourceconfigurations, for example, based on indications from a base station. Aresource parameter (e.g., higher layer parameter, resourceType which maybe comprised in a parameter such as SRS-Resource) may be set to a value(e.g., “periodic”). The base station may configure the wireless devicewith a spatial relation parameter (e.g., higher layer parameter,spatialRelationInfo). The spatial relation parameter (e.g., higher layerparameter, spatialRelationInfo) may comprise an ID of a reference RS(e.g., SSB-Index, CSI-RS-Index, SRS).

The reference RS may comprise a SS/PBCH block. The reference RS maycomprise a RS (e.g., periodic CSI-RS, semi-persistent CSI-RS, aperiodicCSI-RS). The wireless device may receive the reference RS, for example,via a spatial domain receiving filter. The wireless device may send(e.g., transmit) a target SRS resource with a spatial domaintransmission filter that is the same/similar to the spatial domainreceiving filter, for example, based on or in response to a spatialrelation parameter (e.g., higher layer parameter, spatialRelationInfo)indicating the reference RS (e.g., by the ID of the reference RS) viathe SS/PBCH block or the CSI-RS. The wireless device may send (e.g.,transmit) a target SRS resource with the spatial domain receivingfilter, for example, based on the spatial parameter (e.g., higher layerparameter, spatialRelationInfo) indicating the reference RS (e.g., bythe ID of the reference RS).

The RS may be an SRS (e.g., periodic SRS, semi-persistent SRS, aperiodicSRS). The wireless device may use a spatial domain transmission filterto send (e.g., transmit) the reference RS. The wireless device may send(e.g., transmit) a target SRS resource with the spatial domaintransmission filter, for example, based on a spatial relation parameter(e.g., higher layer parameter, spatialRelationInfo) indicating thereference RS (e.g., by an ID of the reference RS) being the SRS.

The base station may activate and deactivate one or more configuredresource sets (e.g., SRS resource sets, semi-persistent SRS resourcesets) of a serving cell by sending a message (e.g., an SP SRSActivation/Deactivation MAC CE). The one or more configured Resourcesets (e.g., SRS resource sets) may be initially deactivated uponconfiguration. The one or more configured Resource sets (e.g., SRSresource sets) may be deactivated after a handover.

A wireless device may be configured with one or more resource sets(e.g., SRS resource sets, semi-persistent SRS resource sets), forexample, as indicated by a base station. A resource parameter (e.g.,higher layer parameter, resourceType which may be comprised in a higherlayer parameter SRS-Resource) may be set to a status (e.g.,semi-persistent, persistent, etc.). The wireless device may receive anactivation command (e.g., SP SRS Activation/Deactivation MAC CE) for anSRS resource set of the one or more Resource sets (e.g., SRS resourcesets), for example, based on an indication from the base station. Adownlink message (e.g., a PDSCH message) may carry the activationcommand. The wireless device may send (e.g., transmit) anacknowledgement (e.g., HARQ-ACK for the PDSCH message) in a slot n. Thewireless device may apply one or more assumptions/actions for an SRStransmission of the SRS resource set starting from the slot n+3N_(slot)^(subframe,μ)+1, for example, based on or in response to the sending ofthe acknowledgement (e.g., HARQ-ACK for the PDSCH message) in the slotn. The activation command may comprise one or more spatial relationassumptions for one or more SRS resources of the SRS resource set. Afirst field (e.g., Resource ID_(i)) in the activation command maycomprise an identifier of a resource (e.g., SS/PBCH block, NZP CSI-RS,SRS) used for spatial relationship derivation for an SRS resource of theone or more SRS resources. The one or more spatial relation assumptionsmay be indicated by a list of references to one or more reference signalIDs (e.g., SSB-Index, SRS-ResourceId, etc.), for example, one per SRSresource of the SRS resource set (e.g., activated SRS resource set). Aspatial relation assumption of the one or more spatial relationassumptions may be indicated by a reference to a reference RS (e.g., anID of a reference RS). The reference RS may comprise a broadcastchannel, channel state resource or other reference signal (e.g., SS/PBCHblock, NZP CSI-RS resource, or SRS).

A wireless device may activate a semi-persistent SRS resourceconfiguration on an uplink BWP of a serving cell, for example, based onor in response to receiving, from a base station, an activation commandfor the semi-persistent SRS resource configuration. The wireless devicemay not receive a deactivation command for the semi-persistent SRSresource configuration, for example, based on an indication from thebase station.

The uplink BWP may be an active uplink BWP of the serving cell. Awireless device may consider a semi-persistent SRS resourceconfiguration active, for example, based on the uplink BWP being theactive uplink BWP of the serving cell and/or not receiving adeactivation command for the semi-persistent SRS resource configuration.The wireless device may send (e.g., transmit), via the uplink BWP of theserving cell, an SRS transmission, for example, based on thesemi-persistent SRS resource configuration and/or the considering.

The uplink BWP may not be an active uplink BWP of the serving cell. Theuplink BWP may not be the active uplink BWP, for example, based on theuplink BWP being deactivated in the serving cell. The wireless devicemay assume that the semi-persistent SRS configuration is suspended inthe UL BWP of the serving cell, for example, based on not receiving thedeactivation command for the semi-persistent SRS resource configurationand/or the uplink BWP being deactivated. The wireless device mayreactivate the semi-persistent SRS configuration when the UL BWP becomesan active UL BWP of the serving cell, for example, based on thesemi-persistent SRS configuration being suspended in the UL BWP.

A first SRS resource of an SRS resource set may have a first time domainbehavior (e.g., periodic, semi-persistent, aperiodic). A second SRSresource of the SRS resource set may have a second time domain behavior(e.g., periodic, semi-persistent, aperiodic). The wireless device mayexpect/assume that the first time domain behavior and the second timebehavior are the same/similar, for example, based on the first SRSresource and the second SRS resource being in the same/similar SRSresource set. The wireless device may not expect/assume that the firsttime domain behavior and the second time behavior are different, forexample, based on the first SRS resource and the second SRS resourcebeing in the (e.g., same/similar) SRS resource set.

An SRS resource of an SRS resource set may have a first time domainbehavior (e.g., periodic, semi-persistent, aperiodic). The SRS resourceset may have a second time domain behavior (e.g., periodic,semi-persistent, aperiodic). The wireless device may expect that thefirst time domain behavior and the second time behavior are thesame/similar, for example, based on the SRS resource being associatedwith the SRS resource set. The wireless device may not expect that thefirst time domain behavior and the second time behavior are different,for example, based on the SRS resource and the SRS resource set havingan association. The SRS resource association with the SRS resource setmay be a comprised by relationship, for example, based on the SRSresource set comprising the SRS resource. The SRS resource associationwith the SRS resource set may be a comprised by relationship, forexample, based on the SRS resource being an element of the SRS resourceset.

A wireless device may not send (e.g., transmit) an RS (e.g., SRS) and arandom access message (e.g., PRACH) (e.g., simultaneously, in series,etc.), for example, based on an intra-band carrier aggregation (CA)and/or in an inter-band CA band-band combination. The wireless devicemay not send (e.g., transmit) an RS (e.g., an SRS) from a first carrierand a random access message (e.g., PRACH) from a second carriersimultaneously, for example, based on not sending the RS (e.g., SRS) andthe random access message (e.g., PRACH) simultaneously. The firstcarrier may be different from the second carrier.

A wireless device with a periodic SRS transmission on at least onesymbol (e.g., OFDM symbol), for example, may be configured by one ormore indications from a base station. The base station may configure anSRS resource with a resource parameter (e.g., higher layer parameter,resourceType) with a value (e.g., aperiodic). The base station maytrigger the SRS resource on the at least one symbol. The wireless devicemay send (e.g., transmit) the (aperiodic) SRS resource on the(overlapped) at least one symbol, for example, based on to the SRSresource with the resource parameter (e.g., higher layer parameter,resourceType) set as a value (e.g., aperiodic) being triggered via theat least one symbol configured with the periodic SRS transmission. Thewireless device may not perform the periodic SRS transmission on the atleast one symbol, for example, based on the SRS resource with theresource parameter (e.g., resourceType) set to a value (e.g., aperiodic)being triggered on the at least one symbol configured with the periodicSRS transmission. The wireless device may not send (e.g., transmit) anSRS associated with the periodic SRS transmission on the (overlapped) atleast one symbol, for example, based on not performing the periodic SRStransmission.

A wireless device with a semi-persistent SRS transmission on at leastone symbol (e.g., OFDM symbol), for example, may be configured byindications from a base station. The base station may configure an SRSresource with a resource parameter (e.g., higher layer parameter,resourceType) set as a value (e.g., aperiodic). The base station maytrigger the SRS resource on the at least one symbol. The wireless devicemay send (e.g., transmit) the (aperiodic) SRS resource on the(overlapped) at least one symbol, for example, based on the SRS resourcewith the resource parameter (e.g., higher layer parameter, resourceType)set as a value (e.g., aperiodic) being triggered on the at least onesymbol configured with the semi-persistent SRS transmission. Thewireless device may not perform the semi-persistent SRS transmission onthe at least one symbol, for example, based on the SRS resource with theresource parameter (e.g., higher layer parameter, resourceType) set as avalue (e.g., aperiodic) being triggered on the at least one symbolconfigured with the semi-persistent SRS transmission. The wirelessdevice may not send (e.g., transmit) an SRS associated with thesemi-persistent SRS transmission on the (overlapped) at least onesymbol, for example, based on not performing the semi-persistent SRStransmission.

A base station may configure a wireless device with a periodic SRStransmission on at least one symbol (e.g., OFDM symbol). The basestation may configure an SRS resource with a resource parameter (e.g.,higher layer parameter, resourceType) set as a value (e.g.,semi-persistent). The base station may trigger the SRS resource on theat least one symbol. The wireless device may send (e.g., transmit) theSRS resource (e.g., semi-persistent) on the at least one symbol (e.g.,overlapped), for example, based on the SRS resource with the resourceparameter (e.g., resourceType) set as semi-persistent being triggered onthe at least one symbol configured with the periodic SRS transmission,The wireless device may not perform the periodic SRS transmission on theat least one symbol, for example, based on the SRS resource with theresource parameter (e.g., resourceType) set as a value (e.g.,semi-persistent) being triggered on the at least one symbol configuredwith the periodic SRS transmission. The wireless device may not send(e.g., transmit) an SRS associated with the periodic SRS transmission onthe at least one symbol (e.g., overlapped), for example, based on thenot performing the periodic SRS transmission.

A base station may configure a wireless device with a list of one ormore TCI state configurations (e.g., TCI-States) using and/or via ahigher layer parameter, for example, PDSCH-Config for a serving cell. Anumber (e.g., quantity, plurality, etc.) of the one or more TCI-Statesmay depend on a capability of the wireless device. The wireless devicemay use the one or more TCI-States to decode a PDSCH based on a detectedPDCCH with a DCI. The DCI may be intended, for example, for the wirelessdevice and/or the serving cell. Each of the one or more TCI-States statemay contain one or more parameters. The wireless device may use the oneor more parameters, for example, to configure a quasi-co-locationrelationship between one or more downlink reference signals (e.g., afirst DL RS and/or a second DL RS) and the DM-RS ports of the PDSCH. Thequasi-co-location relationship may be configured by a higher layerparameter QCL-Type1 for the first DL RS. The quasi-co-locationrelationship may be configured by a higher layer parameter QCL-Type2 forthe second DL RS, for example, if the second DL RS is configured.

A first QCL type of a first DL RS and a second QCL type of a second asecond DL RS may not be the same, for example, if the wireless deviceconfigures a quasi co-location relationship between the two DL RSs. Thefirst DL RS and the second DL RS may be the same. The first DL RS andthe second DL RS may be different.

A quasi co-location type (e.g., the first QCL type, the second QCL type)of a DL RS (e.g., the first DL RS, the second DL RS) may be provided tothe wireless device by a higher layer parameter (e.g., QCL-Type inQCL-Info). The higher layer parameter QCL-Type may be at least one of:QCL-TypeA: {Doppler shift, Doppler spread, average delay, delay spread},QCL-TypeB: {Doppler shift, Doppler spread}, QCL-TypeC: {average delay,Doppler shift} and QCL-TypeD: {Spatial Rx parameter}.

A wireless device may receive an activation command. The activationcommand may be used to map one or more TCI states (e.g., 8 states) toone or more codepoints of a TCI field in DCI. Mapping between one ormore TCI states and one or more codepoints of the TCI field in DCI maybe applied starting from slot n+3N_(slot) ^(subframe,μ)+1, for example,if a HARQ-ACK corresponding to a PDSCH carrying the activation commandis sent (e.g., transmitted) in slot n. The wireless device may determine(e.g., assume) that one or more DM-RS ports of a PDSCH of a serving cellare quasi-co-located with an SSB/PBCH block, for example, (i) before thewireless device receives the activation command and/or (ii) after thewireless device receives a higher layer configuration of TCI-States. TheSSB/PBCH block may be determined in an initial access procedure withrespect to one or more of QCL-TypeA′ and QCL-TypeD′, for example, ifapplicable.

A wireless device may be configured by a base station, with a higherlayer parameter TCI-PresentInDCI. The wireless device may determine(e.g., assume) that a TCI field is present in a DCI format (e.g., DCIformat 1_1) of a PDCCH transmitted on the CORESET, for example, if thehigher layer parameter TCI-PresentInDCI is set as ‘Enabled’ for aCORESET scheduling a PDSCH.

A base station and/or a wireless device may configure one or morewireless resources for communications between the base station and thewireless device. The wireless resources may comprise, for example, oneor more CORESETS. The base station may configure the one or moreCORESETS for the wireless device. A base station may (or may not)configure a CORESET with a higher layer parameter (e.g.,TCI-PresentInDCI). The CORESET may schedule a PDSCH. A time offsetbetween a reception of DCI (e.g., DCI format 1_1, DCI format 1_0) in theCORESET and a corresponding PDSCH may be equal to or greater than athreshold (e.g., Threshold-Sched-Offset). The threshold may be based ona reported capability of the wireless device. The wireless device mayapply/associate a second TCI state for/with the CORESET used for a PDCCHtransmission of the DCI. The wireless device may apply/associate asecond QCL assumption for/with the CORESET used for a PDCCH transmissionof the DCI. The wireless device may assume, to determine antenna portquasi co-location of the PDSCH, that a first TCI state and/or a firstQCL assumption for the PDSCH is identical to (or substantially the sameas) the second TCI state and/or the second QCL assumptionapplied/associated for/with the CORESET. The wireless device may performa default PDSCH RS selection, for example, based on one or more of: thebase station not configuring the CORESET with a higher layer parameter(e.g., TCI-PresentInDCI), and/or the time offset between the receptionof the DCI and the PDSCH being equal to or greater than the threshold.The wireless device may assume/determine that a first TCI state and/or afirst QCL assumption for the PDSCH is identical to (or substantially thesame as) the second TCI state and/or the second QCL assumption appliedfor the CORESET.

A base station may configure a CORESET with a higher layer parameter(e.g., TCI-PresentInDCI). The higher layer parameter (e.g.,TCI-PresentInDCI) may be set as enabled (e.g., 1 or other value). TheCORESET may schedule a PDSCH with DCI (e.g., DCI format 1_0). The DCImay or may not comprise a TCI field. A time offset between a receptionof the DCI in the CORESET and a corresponding PDSCH may be equal to orgreater than a threshold (e.g., Threshold-Sched-Offset). The thresholdmay be based on a capability or reported capability of the wirelessdevice. The wireless device may apply/associate a second TCI statefor/with the CORESET used for a PDCCH transmission of the DCI. Thewireless device may apply/associate a second QCL assumption for theCORESET used for a PDCCH transmission of the DCI. The wireless devicemay determine (e.g., assume), to determine an antenna port quasico-location of the PDSCH, that a first TCI state and/or a first QCLassumption for the PDSCH is identical to (or substantially the same as)the second TCI state and/or the second QCL assumption appliedfor/associated with the CORESET. The wireless device may perform adefault PDSCH RS selection, for example, based on one or more of: thebase station scheduling the PDSCH with the DCI not comprising the TCIfield, and/or the time offset between the reception of the DCI and thePDSCH being equal or greater than the threshold. The wireless device maydetermine (e.g., assume) that a first TCI state and/or a first QCLassumption for the PDSCH is identical to (or substantially the same as)the second TCI state and/or the second QCL assumption applied for theCORESET. As described herein, the terms “TCI state” and “QCL assumption”may be used interchangeably. “TCI state” and/or “QCL assumption” mayindicate a beam used for reception of data (e.g., reception of PDSCHdata).

A base station may configure a CORESET with a higher layer parameter(e.g., TCI-PresentInDCI). The higher layer parameter (e.g.,TCI-PresentInDCI) may be set as enabled (e.g., 1 or other value). Thewireless device may receive DCI in the CORESET of a scheduling componentcarrier. The DCI may comprise a TCI field. The TCI field in the DCI inthe scheduling component carrier may indicate one or more activated TCIstates (e.g., after receiving the activation command) in a scheduledcomponent carrier or in a DL BWP, for example, based on the higher layerparameter (e.g., TCI-PresentInDCI) being set as enabled (e.g., 1 orother value).

A base station may configure a CORESET with a higher layer parameter(e.g., TCI-PresentInDCI). The higher layer parameter (e.g.,TCI-PresentInDCI) may be set as enabled (e.g., 1 or other value). Thewireless device may receive DCI (e.g., DCI format 1_1) in the CORESET.The DCI may schedule a PDSCH of a wireless device. The DCI may comprisea TCI field. The value of the TCI field may indicate the TCI state. Atime offset between a reception of the DCI and the correspondingscheduled PDSCH may be equal to or greater than a threshold (e.g.,Threshold-Sched-Offset). The threshold may be based on a capability orreported capability of the wireless device. The wireless device may usea TCI state according to a value of the TCI field (e.g., in a detectedPDCCH with the DCI) to determine antenna port quasi co-location for thePDSCH. The wireless device may determine antenna port quasi co-locationfor the PDSCH, for example, based on one or more of: the TCI field beingpresent in the DCI scheduling the PDSCH, and/or a higher layer parameter(e.g., TCI-PresentInDCI) being set as enabled for the CORESET. Using theTCI state according to the value of the TCI field may comprise thewireless device determining/assuming that one or more DM-RS ports of thePDSCH of a serving cell are quasi co-located with one or more RS(s) inthe TCI state with respect to one or more QCL type parameter(s) given bythe TCI state, for example, if the time offset between the reception ofthe DCI and the PDSCH is equal or greater than the threshold.

A base station may configure a wireless device with a single slot PDSCH(e.g., and/or any other quantity of slot PDSCH). The single slot PDSCHmay be scheduled in a slot. The base station may activate one or moreTCI states in the slot. A TCI state (e.g., indicated by a TCI field inDCI scheduling the single slot PDSCH) may be based on the one or moreactivated TCI states in the slot with the scheduled single slot PDSCH.The TCI state may be one of the one or more activated TCI states in theslot. The TCI field in the DCI may indicate a TCI state of the one ormore activated TCI states in the slot.

A wireless device may be configured with a CORESET. The CORESET may beassociated with a search space set for cross-carrier scheduling. Thewireless device may determine/expect/assume that a higher layerparameter (e.g., TCI-PresentInDCI) is set as enabled for the CORESET,for example, based on the CORESET being associated with the search spaceset for cross-carrier scheduling. A base station may configure a servingcell with one or more TCI states. The wireless device may detect, in thesearch space set, a PDCCH (e.g., comprising DCI) for scheduling a PDSCH.A TCI field in the DCI may indicate at least one of the one or more TCIstates. The at least one of the one more TCI states (e.g., scheduled bythe search space set) may comprise a QCL type (e.g., QCL-TypeD). Thewireless device may determine/expect/assume that a time offset between areception of the PDCCH detected in the search space set and the PDSCH isgreater than or equal to a threshold (e.g., Threshold-Sched-Offset), forexample, based on at least one of the one or more TCI states scheduledby the search space set containing the QCL type.

A base station may configure a CORESET with a higher layer parameter(e.g., TCI-PresentInDCI). The higher layer parameter (e.g.,TCI-PresentInDCI) may be set as enabled. An offset between a receptionof DCI in the CORESET and a PDSCH scheduled by the DCI may be less thana threshold (e.g., Threshold-Sched-Offset), for example, if the higherlayer parameter (e.g., TCI-PresentInDCI) is set to be enabled for theCORESET.

A base station may or may not configure a CORESET with a higher layerparameter (e.g., TCI-PresentInDCI). The wireless device may be, forexample, in an RRC connected mode. The wireless device may be, forexample, in an RRC idle mode. The wireless device may be, for example,in an RRC inactive mode. An offset between a reception of DCI in theCORESET and a PDSCH scheduled by the DCI may be less than a threshold(e.g., Threshold-Sched-Offset), for example, if the higher layerparameter (e.g., TCI-PresentInDCI) is not configured for the CORESET.

A wireless device may monitor one or more CORESETs and/or one or moresearch spaces within/in an active BWP (e.g., an active downlink BWP) ofa serving cell in one or more slots (e.g., one or more time slots).Monitoring the one or more CORESETs within/in the active BWP of theserving cell in the one or more slots may comprise monitoring at leastone CORESET within/in the active BWP of the serving cell in each slot ofthe one or more slots. A latest slot of the one or more slots may be amost recent slot. The wireless device may monitor, within/in the activeBWP of the serving cell, one or more second CORESETs of the one or moreCORESETs in the latest slot. The wireless device may determine thelatest slot, for example, based on monitoring the one or more secondCORESETs in the latest slot. Each CORESET of the one or more secondCORESETs may be indicated/identified by a CORESET-specific index (e.g.,indicated by a higher layer parameter, such as CORESET-ID). A CORESETspecific index of a CORESET of the one or more second CORESETs may beleast among the CORESET specific indices of the one or more secondCORESETs. The wireless device may monitor a search space associated withthe CORESET (e.g., in the latest slot). The wireless device may selectthe CORESET of the one or more second CORESETs, for example, based onone or more of: the CORESET-specific index of the CORESET being theleast, and/or the monitoring the search space associated with theCORESET in the latest slot (or any other slot). The wireless device mayperform a default PDSCH RS selection, for example, if an offset betweenthe reception of the DCI in the CORESET and the PDSCH scheduled by theDCI is less than a threshold (e.g., Threshold-Sched-Offset). Thewireless device may determine/assume that one or more DM-RS ports of thePDSCH of the serving cell are quasi co-located with one or more RSs in aTCI state with respect to one or more QCL type parameter(s), forexample, based on the default PDSCH RS selection. The one or more RSs inthe TCI state may be used for PDCCH quasi co-location indication of theCORESET of the one or more second CORESETs, based on or in response tothe selecting the CORESET.

A wireless device may receive DCI via a PDCCH in a CORESET. The DCI mayschedule a PDSCH. An offset between a reception of the DCI and the PDSCHmay be less than a threshold (e.g., Threshold-Sched-Offset). A first QCLtype (e.g., QCL-TypeD) of one or more DM-RS ports of the PDSCH may bedifferent from a second QCL type (e.g., QCL-TypeA) of one or more secondDM-RS ports of the PDCCH. The PDSCH and the PDCCH may overlap in atleast one symbol. The wireless device may prioritize a reception of thePDCCH associated with the CORESET, for example, based on one or more of:the PDSCH and the PDCCH overlapping in at least one symbol, and/or thefirst QCL type being different from the second QCL type. Theprioritizing may apply to an intra-band CA case, for example, if thePDSCH and the CORESET are in different component carriers. Theprioritizing the reception of the PDCCH may comprise receiving the PDSCHwith the second QCL type of one or more second DM-RS ports of the PDCCH.The prioritizing the reception of the PDCCH may comprise overwriting thefirst QCL type of the one or more DM-RS ports of the PDSCH with thesecond QCL type of the one or more second DM-RS ports of the PDCCH. Theprioritizing the reception of the PDCCH may comprise assuming a spatialQCL of the PDCCH (e.g., the second QCL type), for the simultaneousreception of the PDCCH and the PDSCH. The prioritizing the reception ofthe PDCCH may comprise applying a spatial QCL of the PDCCH (e.g., thesecond QCL type), for the simultaneous reception of the PDCCH and thePDSCH.

The configured TCI states may or may not comprise an indication of a QCLtype (e.g., none of the configured TCI states may comprise an indicationof a QCL type, none of the configured TCI states may comprise anindication of a QCL-TypeD). The wireless device may determine assume QCLassumptions for the configured TCI states, for example, based onindicated TCI states for one or more scheduled PDSCH transmissions, forexample, if none of the configured TCI states comprise the indication ofthe QCL type. The wireless device may determine QCL assumptions for theconfigured TCI states, for example, irrespective of the time offsetbetween the reception of the DCI and the corresponding PDSCH.

A wireless device may use a CSI-RS for at least one of: time/frequencytracking, CSI computation, L1-RSRP computation, and/or mobility. A basestation may configure a wireless device to monitor a CORESET on one ormore symbols (e.g., OFDM symbols). A CSI-RS resource may be associatedwith a resource set parameter (e.g., non-zero power CSI-RS resource set,NZP-CSI-RS-ResourceSet). A higher layer parameter repetition of theNZP-CSI-RS-ResourceSet may be set to ‘on’ or another indication/value(e.g., 1, enabled, etc.). The wireless device may not determine/expectto be configured with a CSI-RS of the CSI-RS resource over the one ormore symbols, for example, based on or in response to the CSI-RSresource being associated with the NZP-CSI-RS-ResourceSet with thehigher layer parameter repetition set to ‘on’ or anotherindication/value (e.g., 1, enabled, etc.).

A higher layer parameter repetition of the NZP-CSI-RS-ResourceSet maynot be set to ‘on’ or another indication/value (e.g., 1, enabled, etc.).A base station may configure a CSI-RS resource and/or one or more searchspace sets associated with a CORESET in the same (or different) one ormore symbols (e.g., OFDM symbols). The wireless device maydetermine/assume that a CSI-RS of the CSI-RS resource and one or moreDM-RS ports of a PDCCH are quasi co-located with QCL-TypeD, for example,based on one or more of: the higher layer parameter repetition of theNZP-CSI-RS-ResourceSet not being set to ‘on’ or another indication/value(e.g., 1, enabled, etc.), and/or the CSI-RS resource and the one or moresearch space sets associated with the CORESET being configured in thesame one or more symbols. The base station may send (e.g., transmit_thePDCCH in the one or more search space sets associated with the CORESET.

A higher layer parameter repetition of the NZP-CSI-RS-ResourceSet maynot be set to ‘on’ or another indication/value (e.g., may be set to 0,disabled, etc.). In A base station may configure a CSI-RS resource of afirst cell and one or more search space sets associated with a CORESETof a second cell in the same (or different) one or more symbols (e.g.,OFDM symbols). The wireless device may determine/assume that a CSI-RS ofthe CSI-RS resource and one or more DM-RS ports of a PDCCH are quasico-located with QCL-TypeD, for example, based on one or more of: thehigher layer parameter repetition of the NZP-CSI-RS-ResourceSet notbeing set to ‘on’ or another indication/value (e.g., 1, enabled, etc.),and/or the CSI-RS resource and the one or more search space setsassociated with the CORESET being configured in the same one or moresymbols. The base station may send (e.g., transmit) the PDCCH in the oneor more search space sets associated with the CORESET. The first celland the second cell may be in different intra-band component carriers.

A base station may configure a wireless device with a CSI-RS in a firstset of PRBs. The base station may configure the wireless device with oneor more search space sets associated with a CORESET in one or moresymbols (e.g., OFDM symbols) and/or in a second set of PRBs. Thewireless device may not determine/expect that the first set of PRBs andthe second set of PRBs overlap in the one or more symbols.

A base station may configure a wireless device with a CSI-RS resourceand an SS/PBCH block in the same (or different) one or more symbols(e.g., OFDM symbols). The wireless device may determine/assume that theCSI-RS resource and the SS/PBCH block are quasi co-located with a QCLtype (e.g., QCL-TypeD), for example, based on the CSI-RS resource andthe SS/PBCH block being configured in the same one or more symbols.

The base station may configure the CSI-RS resource in a first set ofPRBs for the wireless device. The base station may configure the SS/PBCHblock in a second set of PRBs for the wireless device. The wirelessdevice may not determine/expect that the first set of PRBs overlap withthe second set of PRBs.

The base station may configure the CSI-RS resource with a firstsubcarrier spacing for the wireless device. The base station mayconfigure the SS/PBCH block with a second subcarrier spacing for thewireless device. The wireless device may determine/expect that the firstsubcarrier spacing and the second subcarrier spacing are the same.

A base station may configure a wireless device with anNZP-CSI-RS-ResourceSet. The NZP-CSI-RS-ResourceSet may be configuredwith a higher layer parameter repetition set to ‘on’ or anotherindication/value (e.g., 1, enabled, etc.). The wireless device maydetermine/assume that the base station may send (e.g., transmit) one ormore CSI-RS resources within the NZP-CSI-RS-ResourceSet with a samedownlink spatial domain transmission filter, for example, based on theNZP-CSI-RS-ResourceSet being configured with the higher layer parameterrepetition set to ‘on’ or another indication/value (e.g., 1, enabled,etc.). The base station may send (e.g., transmit) each CSI-RS resourceof the one or more CSI-RS resources in different symbols (e.g., OFDMsymbols).

The NZP-CSI-RS-ResourceSet may be configured with a higher layerparameter repetition set to ‘off’ or another indication/value (e.g., 0,disabled, etc.). The wireless device may not determine/assume that thebase station may send (e.g., transmit) one or more CSI-RS resourceswithin the NZP-CSI-RS-ResourceSet with a same downlink spatial domaintransmission filter, for example, based on the NZP-CSI-RS-ResourceSetbeing configured with the higher layer parameter repetition set to ‘off’or another indication/value (e.g., 0, disabled, etc.).

A base station may configure a wireless device with a higher layerparameter (e.g., groupBasedBeamReporting). The base station may set thehigher layer parameter (e.g., groupBasedBeamReporting) to enabled oranother indication/value (e.g., 1, on, etc.). The wireless device mayreport at least two different resource indicators (e.g., CRI, SSBRI) ina single reporting instance to report setting of one or more reportsettings, for example, based on the higher layer parametergroupBasedBeamReporting being set to enabled or another indication/value(e.g., 1, on, etc.). The wireless device may receive at least two RSs(e.g., CSI-RS, SSB) indicated by the at least two different resourceindicators simultaneously. The wireless device may receive (e.g.,simultaneously receive) the at least two RSs with a single spatialdomain receive filter. The wireless device may receive (e.g.,simultaneously receive) the at least two RSs with a plurality ofsimultaneous spatial domain receive filters.

A base station may need/request radio access capability information of awireless device. The base station may initiate a procedure to requestthe radio access capability information. The base station may use, forexample, an information element (e.g., UECapabilityEnquiry). Thewireless device may use an information element (e.g.,UECapabilityInformation) to transfer wireless device radio accesscapability information requested by the base station. The wirelessdevice may indicate/provide, for example, a parameter (e.g.,timeDurationForQCL) in a message (e.g., FeatureSetDownlink) indicating aset of features that the wireless device supports.

The threshold may comprise a minimum quantity of OFDM symbols for thewireless device to perform a downlink control channel message (e.g.,PDCCH message) reception with a DCI and to apply a spatial QCLinformation (e.g., TCI-State) indicated by (e.g., received in) the DCIfor a processing of a downlink shared channel message (e.g., PDSCHmessage) with a schedule indicated by the DCI. The minimum quantity ofOFDM symbols between the downlink shared channel message (e.g., PDCCHmessage) reception and the processing of the PDSCH to apply the spatialQCL information may be used by the wireless device and/or indicated bythe DCI, via a downlink shared channel message (e.g., PDSCH message).

A base station may use an information element (IE) (e.g.,CSI-AperiodicTriggerStateList) to configure a wireless device with oneor more aperiodic trigger states (e.g., 1, 64, 128, etc. aperiodictrigger states). A codepoint of a CSI request field in a DCI mayindicate/be associated with an aperiodic trigger state of the one ormore aperiodic trigger states. The aperiodic trigger state may compriseone or more report configurations (e.g., 1, 8, 16, etc. reportconfigurations, indicated by a report parameter (e.g., higher layerparameter, associatedReportConfigInfoList)). The wireless device mayperform measurement of CSI-RS and aperiodic reporting, for example,based on receiving the DCI with the CSI request field indicating theaperiodic trigger state and/or the one or more report configurations(e.g., in the associatedReportConfigInfoList) for the aperiodic triggerstate. For example, the DCI and/or report configurations describedherein may be used for aperiodic CSI RS

A report configuration (e.g., indicated by a report parameter (e.g.,higher layer parameter, CSI-AssociatedReportConfigInfo)) of the one ormore report configurations may be indicated by/associated with a reportconfiguration index (e.g., indicated by a higher layer parameter orCSI-ReportConfigId). The report configuration may comprise one or moreCSI resources (e.g., 1, 8, 16, etc. CSI resources). An aperiodic CSIresource of the one or more CSI resources may be associated with a TCIstate (e.g., indicated by a QCL parameter (e.g., higher layer parameter,qcl-info) in an IE (e.g., CSI-AperiodicTriggerStateList)) of one or moreTCI-State configurations. The TCI state may indicate a QCL assumption(e.g., an RS, an RS source, SS/PBCH block, CSI-RS). The TCI state mayindicate a QCL type (e.g., QCL-TypeA, QCL-TypeD, etc.).

The wireless device may receive a DCI message with a CSI request fieldfrom a base station. The wireless device may receive the DCI message viaa PDCCH. The wireless device may receive the DCI message when monitoringthe PDCCH. the DCI message with the CSI request field mayinitiate/indicate/trigger an aperiodic trigger state of the one or moreaperiodic trigger states. A codepoint of the CSI request field in theDCI may indicate the aperiodic trigger state. The aperiodic triggerstate may comprise one or more report configurations (e.g., a list ofNZP-CSI-RS-ResourceSet). A report configuration (e.g.,NZP-CSI-RS-ResourceSet) of the one or more report configurations maycomprise one or more CSI resources (e.g., aperiodic CSI-RS resources,NZP-CSI-RS-Resources).

The base station may not configure the report configuration with a TRSparameter (e.g., higher layer parameter, trs-Info). A first antenna portfor a first aperiodic CSI resource of the one or more CSI resources maybe different from a second antenna port for a second aperiodic CSIresource of the one or more CSI resources, for example, based the reportconfiguration without the TRS parameter (e.g., higher layer parameter,trs-Info). An antenna port for each aperiodic CSI-RS resource of the oneor more CSI resources may be different, for example, based on the reportconfiguration without the TRS parameter (e.g., higher layer parameter,trs-Info). The base station may not configure the report configurationwith a higher layer parameter repetition. A scheduling offset between alast symbol of the a PDCCH message carrying the DCI and a first symbolof the one or more CSI resources in the report configuration may besmaller than a second threshold (e.g., beamSwitchTiming). The wirelessdevice may report the second threshold. The second threshold may be afirst value (e.g., 14, 28, 48, etc. symbols).

An aperiodic CSI resource of the one or more CSI resources may beassociated with a first TCI state of the one or more TCI-Stateconfigurations. The first TCI state may indicate at least one first RS.The first TCI state may indicate at least one first QCL type. Theaperiodic CSI resource may be associated with the first TCI state. Thewireless device may receive an aperiodic CSI-RS of the aperiodic CSIresource with the at least one first RS (e.g., indicated by the firstTCI state) with respect to the at least one first QCL type indicated bythe first TCI state.

The base station may send (e.g., transmit) a downlink signal with asecond TCI state. The second TCI state may indicate at least one secondRS. The second TCI state may indicate at least one second QCL type. Thewireless device may receive the downlink signal in one or more firstsymbols. The wireless device may receive an aperiodic CSI-RS for theaperiodic CSI resource in one or more second symbols. The one or morefirst symbols and the one or more second symbols may overlap (e.g.,fully or partially). The downlink signal and the aperiodic CSI-RS (orthe aperiodic CSI-RS resource) may overlap, for example, based on theone or more first symbols and the one or more second symbolsoverlapping.

The downlink signal and the aperiodic CSI-RS (or the aperiodic CSI-RSresource) may overlap in a time duration. The time duration may be atleast one symbol. The time duration may be at least one slot. The timeduration may be at least one subframe. The time duration may be at leastone mini-slot. The time duration may be the one or more second symbols.The time duration may be the one or more first symbols.

The downlink signal may be a PDSCH message scheduled with an offsetlarger than or equal to a first threshold (e.g., Threshold-Sched-Offset,timeDurationForQCL). The downlink signal may be a second aperiodicCSI-RS scheduled with an offset larger than or equal a second threshold(e.g., beamSwitchTiming) when the second threshold is a first value(e.g., 14, 28, 48, etc. symbols). The downlink signal may be an RS(e.g., periodic CSI-RS, semi-persistent CSI-RS, SS/PBCH block etc.).

The scheduling offset between the last symbol of the PDCCH message andthe first symbol may be smaller than the second threshold, for example,based on the downlink signal with the second TCI state and the aperiodicCSI-RS (or the aperiodic CSI-RS resource) overlapping. The wirelessdevice may apply a QCL assumption indicated by the second TCI state, forexample, based on receiving the aperiodic CSI-RS. The wireless devicemay receive the aperiodic CSI-RS with the at least one second RS (e.g.,indicated by the second TCI state) with respect to the at least onesecond QCL type indicated by the second TCI state, for example, based onapplying the QCL assumption (e.g., indicated by the second TCI state)and/or receiving the aperiodic CSI message.

A scheduling offset between a last symbol of the PDCCH message carryingthe DCI and a first symbol of the one or more CSI resources in thereport configuration may be equal to or larger than a second threshold(e.g., beamSwitchTiming). The wireless device may report the secondthreshold. The second threshold may be a first value (e.g., 14, 28, 48,etc. symbols). The wireless device may apply a QCL assumption (indicatedby the first TCI state) for the aperiodic CSI resource of the one ormore CSI resources in the report configuration, for example, based onthe scheduling offset being equal to or larger than the secondthreshold. The wireless device may receive the aperiodic CSI-RS of theaperiodic CSI resource with the at least one first RS (indicated by thefirst TCI state) with respect to the at least one first QCL typeindicated by the first TCI state, for example, based on the QCLassumption (e.g., indicated by the first TCI state) for the aperiodicCSI resource.

A wireless device may be equipped with one or more antenna panels. Thewireless device may send (e.g., transmit) and/or receive via the one ormore antenna panels (e.g., simultaneously, in series, or otherwise). Thewireless device may deactivate at least one antenna panel of the one ormore antenna panels to save power (e.g., less monitoring downlinkcontrol channel, less uplink/downlink transmission, etc.). The wirelessdevice may not keep the one or more panels active for an uplink and/ordownlink transmission. The wireless device may activate and/ordeactivate at least one antenna panel of the one or more antenna panelsautonomously. The wireless device may activate and/or deactivate atleast one antenna panel of the one or more antenna panels, for example,based on an indication (for example, RRC, MAC-CE, DCI) from a basestation.

The wireless device may stop sending an uplink signal (for example,RACH, PUCCH, SRS) via the uplink BWP, for example, based on deactivatingan UL BWP. A wireless device may deactivate at least one antenna panelof one or more antenna panels within an uplink BWP. The behavior of thewireless device via the deactivated antenna panel(s) may not becurrently defined. A mechanism for the wireless device may be used tocommunicate antenna panel status, for example, based on the wirelessdevice activating and/or deactivating at least one antenna panel withinthe same/similar BWP (for example, an uplink BWP, and/or a downlinkBWP). The wireless device may stop uplink transmissions (for example,PRACH, PUSCH, PUCCH, SRS) via the deactivated antenna panel(s). Thisstopping may reduce uplink interference to other wireless devices andother cells. This stopping may increase the signal quality (for example,SINR) of other wireless devices, and/or other cells.

The wireless device may stop reporting CSI for a deactivated antennapanel(s). The wireless device may stop monitoring at least one PDCCH ina CORESET configured for the deactivated antenna panel(s). This stoppingmay decrease the battery consumption power for the wireless device. Thewireless device may save power, for example, based on stopping themonitoring and/or the reporting the CSI.

An antenna panel may be configured with a configured uplink grant and/oran SRS (e.g., semi-persistent SRS). Legacy systems may not teach thebehavior of the wireless device for the configured grant and/or the SRS,for example, based on the wireless device deactivating the antennapanel. The wireless device may release and/or clear the configureduplink grant and/or the SRS, for example, based on the antenna panelbeing reactivated. The base station may send (e.g., transmit) newconfiguration parameters for a configured uplink grant and/or SRS. Thisprocess may increase the signaling overhead, battery consumption, and/orsignaling latency.

Communicating, from the wireless device to the base station, one or moreindications of deactivated panels may reduce signaling overhead,latency, and/or the like, for transmission of a configured grant and/oran SRS resource configuration when an antenna panel is set to anactivated state and/or set to a deactivated state. The wireless devicemay receive downlink and/or send uplink transmissions when an antennapanel is set to an activated state and/or set to a deactivated state.

The wireless device may activate and/or deactivate antenna panel(s)autonomously (for example, without an indication from a base station).Deactivated antenna panel(s) may save power consumed by the wirelessdevice. The wireless device may indicate the deactivated and/oractivated panel(s) to the base station, for example, based on theactivating and/or deactivating of antenna panel(s). The base station mayuse this information to communicate more efficiently to the wirelessdevice. The base station may not send (e.g., transmit) and/or receivevia the activated panel, for example, based the wireless device notindicating an activated panel. The wireless device may monitor, via theactivated panel, for a downlink control information (DCI) message, forexample, based on the base station not communicating with the activatedpanel. This process may increase the power consumption of the wirelessdevice.

The base station may send (e.g., transmit) and/or receive (for example,a DCI message) via the deactivated panel, for example, based on thewireless device not indicating a deactivated panel. The wireless devicemay not monitor, via the deactivated panel, for a DCI message. The basestation may send (e.g., transmit), via the deactivated panel, a DCImessage, for example, based on the base station not being aware of thedeactivated panel. The wireless device may miss (e.g., receiving) theDCI message via the deactivated antenna panel. This missing may increaselatency of communication, decrease data rate, decrease reliability ofthe communication, and/or the like.

There may be a need to introduce a mechanism to indicate an activationand/or deactivation status of an antenna panel to the base station, forexample, based on the wireless device activating and/or deactivatingautonomously. A PDSCH message may have a single QCL assumption, forexample, in legacy systems. The wireless device may receive the PDSCHmessage with a single reference signal (or beam), for example, based onthe PDSCH having the single QCL assumption. The single QCL assumptionmay indicate a first RS (e.g., SS/PBCH block and/or CSI-RS) with a firstQCL type (e.g., QCL-TypeD). The wireless device may determine that atleast one DM-RS of the PDSCH message is quasi co-located with the firstRS, for example, based on the PDSCH message having the single QCLassumption indicating the first RS. The wireless device may receive thePDSCH based on a first beam associated with the first RS. The wirelessdevice may apply the single QCL assumption of the PDSCH for a receptionof the aperiodic CSI-RS based on a second threshold (e.g.,beamSwitchTiming), for example, based a legacy system use and anaperiodic CSI-RS overlapping with a PDSCH.

A base station may need UE radio access capability information of awireless device (e.g., additional capability information). The basestation may initiate a procedure to request the UE radio accesscapability information (e.g., by an information elementUECapabilityEnquiry) from the wireless device, for example, based onlacking the UE radio access capability information. The wireless devicemay use an information element (e.g., UECapabilityInformation message)to indicate the UE radio access capability information, for example,based on information requested by the base station.

The wireless device may indicate a first threshold (e.g.,timeDurationForQCL, Threshold-Sched-Offset) in a feature set (e.g.,FeatureSetDownlink) indicating a set of features that the wirelessdevice supports. The wireless device may indicate the first threshold(e.g., timeDurationForQCL, Threshold-Sched-Offset), for example, basedon indicating UE radio access capability information requested by thebase station. The first threshold may comprise a minimum quantity ofOFDM symbols for the wireless device to perform a control channelmessage (e.g., PDCCH message) reception with a DCI and to apply aspatial QCL information (e.g., TCI-State) indicated by the DCI for aprocessing of a shared channel message (e.g., PDSCH message) scheduledby the DCI. The wireless device may use the minimum quantity of OFDMsymbols between the control channel message (e.g., PDCCH message)reception and the processing of the shared channel message (e.g., PDSCHmessage) to apply the spatial QCL information, indicated by the DCI, viathe shared channel (e.g., PDSCH).

The wireless device may indicate a second threshold (e.g.,beamSwitchTiming) indicating a set of features that the wireless devicesupports. The wireless device may indicate the second threshold (e.g.,beamSwitchTiming), for example, based on indicating UE radio accesscapability information requested by the base station.

The second threshold may indicate a minimum quantity of OFDM symbolsbetween a DCI message triggering an aperiodic RS (e.g., CSI-RS) andtransmission of the RS (e.g., aperiodic CSI-RS). A quantity of OFDMsymbols for a minimum quantity of OFDM symbols may be measured from alast symbol containing an indication. A quantity of OFDM symbols for aminimum quantity of OFDM symbols may be measured to a first symbol ofthe aperiodic CSI-RS. The wireless device may include a second thresholdfor a sub-carrier spacing supported by the wireless device.

A wireless device may receive a PDSCH with one or more QCL assumptions,for example, based on multi-TRP being supported. A PDSCH may have atleast two QCL assumptions, for example, based on at least two TRPsserving a wireless device. A first QCL assumption of the at least twoQCL assumptions may be associated with a first TRP of the at least twoTRPs. A second QCL assumption of the at least two QCL assumptions may beassociated with a second TRP of the at least two TRPs.

The wireless device may receive a downlink signal/channel (e.g., PDSCH)sent by the TRP based on the QCL assumption (or the TCI state), forexample, based on a QCL assumption (or a TCI state) associated with aTRP. At least one DM-RS port, sent by the TRP of the downlinksignal/channel, may be quasi co-located with at least one RS indicatedby the QCL assumption (or the TCI state), for example, based onreceiving the downlink signal/channel and/or on the QCL assumption (orthe TCI state).

Legacy systems may not employ a selection of which QCL assumption of theat least two QCL assumptions to apply for a reception of the aperiodicCSI-RS, for example, based on a PDSCH with at least two QCL assumptionsoverlapping with an aperiodic CSI-RS. A mechanism to avoid beammisalignment between the base station and the wireless device may enablethe wireless device to receive the aperiodic CSI-RS reliably, forexample, based on the base station and the wireless device using alignedQCL assumptions indicating beams. The wireless device may not receivethe aperiodic CSI-RS reliably, for example, based on the wireless deviceselecting the first QCL assumption for the aperiodic CSI-RS receptionand/or the base station using the second QCL assumption for theaperiodic CSI-RS transmission. The beam management procedure may becomeless efficient, for example, based on not receiving the aperiodic CSI-RSreliably. The base station may not identify a reliable and/or robustbeam for the wireless device, for example, based on beam misalignment.

The beam at the wireless device may align with the beam at the basestation when a PDSCH message with at least two QCL assumption overlapswith an aperiodic CSI-RS. Indicating this alignment may increase therobustness of the communication and/or decrease the latency to find asuitable beam to serve the wireless device.

FIG. 16 shows example configurations of multiple antenna panels. Awireless device 1614 may comprise a plurality of antenna panels 1610 and1612. The antenna panels 1610 and 1612 may send and receive informationto TRPs 1606 and 1608 via BWPs 1602 and 1604. The wireless device 1614may receive configurations of the BWPs 1602 and 1604 that include SRS,uplink control channel (e.g., PUCCH), and uplink shared channel (e.g.,PUSCH) configurations.

A wireless device 1614 may receive (e.g., from a base station) one ormore messages comprising one or more configuration parameters for a cell(e.g., PCell, PSCell, PUCCH SCell, SCell). The one or more messages maycomprise one or more RRC messages (e.g., RRC connection reconfigurationmessage, or RRC connection reestablishment message, or RRC connectionsetup message). The one or more configuration parameters may furthercomprise BWP configuration parameters for a plurality of BWPs. Theplurality of BWPs may comprise a plurality of downlink BWPs of the celland a plurality of uplink BWPs of the cell. The plurality of downlinkBWPs may comprise a downlink BWP of the cell. The plurality of uplinkBWPs may comprise an uplink BWP (e.g., UL BWP-1, UL-BWP-2 in FIG. 16 )of the cell.

The wireless device 1614 may be equipped with one or more antenna panels(e.g., Panel-1 1610 and Panel-2 1612). The one or more configurationparameters may indicate panel-specific indices (e.g., indicated by ahigher layer parameter) for the one or more antenna panels. Each antennapanel of the one or more antenna panels may be indicated by a respectiveone panel-specific index of the panel-specific indices. A first antennapanel of the one or more antenna panels may be indicated by a firstpanel-specific index. A second antenna panel (e.g., Panel-2) of the oneor more antenna panels may be indicated by a second panel-specificindex.

The one or more configuration parameters may indicate one or more SRSresource sets for a serving cell (e.g., by a higher layer parameter orSRS-ResourceSet). The one or more configuration parameters may indicateSRS resource set indices (e.g., indicated by a SRS parameter (e.g.,higher layer parameter, SRS-ResourceSetId)) for the one or more Resourcesets (e.g., SRS resource sets). Each SRS resource set of the one or moreResource sets (e.g., SRS resource sets) may be indicated by a respectiveSRS resource set index of the SRS resource set indices. A first SRSresource set of the one or more Resource sets (e.g., SRS resource sets)may be indicated by a first SRS resource set index. A second SRSresource set of the one or more Resource sets (e.g., SRS resource sets)may be indicated by a second SRS resource set index.

The wireless device 1614 may send, via a first antenna panel of the oneor more antenna panels, a first SRS transmission for the first SRSresource set. The wireless device 1614 may send, via a second antennapanel of the one or more antenna panels, a second SRS transmission forthe second SRS resource set. Each SRS resource set may be associatedwith one antenna panel of the one or more antenna panels. The first SRSresource set index may indicate the first antenna panel. The second SRSresource set index may indicate the second antenna panel. The firstpanel-specific index and the first SRS resource set index may be thesame/similar. The second panel-specific index and the second SRSresource set index may be the same/similar. Each antenna panel of theone or more antenna panels may be indicated by a respective one SRSresource set index of the SRS resource set indices.

The one or more configuration parameters may comprise SRS configurationparameters (e.g., SRSConfig-1 and SRSConfig-2; SRSConfig-3, andSRSConfig-4) for the one or more antenna panels (e.g., Panel-1 1610,Panel-2 1612) for an uplink BWP (e.g., UL BWP-1, UL-BWP-2) of theplurality of uplink BWPs of the cell. First SRS configuration parameters(e.g., SRSConfig-1) of the SRS configuration parameters for the uplinkBWP (e.g., UL BWP-1) may be associated with a first antenna panel (e.g.,Panel-1 1610) of the one or more antenna panels. Second SRSconfiguration parameters (e.g., SRSConfig-2) of the SRS configurationparameters for the uplink BWP (e.g., UL BWP-1) may be associated with asecond antenna panel (e.g., Panel-2 1612) of the one or more antennapanels.

First SRS configuration parameters (e.g., SRSConfig-3) of the SRSconfiguration parameters for the uplink BWP (e.g., UL BWP-2) may beassociated with a first antenna panel (e.g., Panel-1 1610) of the one ormore antenna panels. Second SRS configuration parameters (e.g.,SRSConfig-4) of the SRS configuration parameters for the uplink BWP(e.g., UL BWP-2) may be associated with a second antenna panel (e.g.,Panel-2 1612) of the one or more antenna panels.

The one or more configuration parameters may comprise PUSCHconfiguration parameters (e.g., PUSCHConfig-1 and PUSCHConfig-2;PUSCHConfig-3, and PUSCHConfig-4) for the one or more antenna panels(e.g., Panel-1 1610, Panel-2 1612) for an uplink BWP (e.g., UL BWP-1,UL-BWP-2) of the plurality of uplink BWPs of the cell. First PUSCHconfiguration parameters (e.g., PUSCHConfig-1) of the PUSCHconfiguration parameters for the uplink BWP (e.g., UL BWP-1) may beassociated with a first antenna panel (e.g., Panel-1 1610) of the one ormore antenna panels. Second PUSCH configuration parameters (e.g.,PUSCHConfig-2) of the PUSCH configuration parameters for the uplink BWP(e.g., UL BWP-1) may be associated with a second antenna panel (e.g.,Panel-2 1612) of the one or more antenna panels.

First PUSCH configuration parameters (e.g., PUSCHConfig-3) of the PUSCHconfiguration parameters for the uplink BWP (e.g., UL BWP-2) may beassociated with a first antenna panel (e.g., Panel-1 1610) of the one ormore antenna panels. Second PUSCH configuration parameters (e.g.,PUSCHConfig-4) of the PUSCH configuration parameters for the uplink BWP(e.g., UL BWP-2) may be associated with a second antenna panel (e.g.,Panel-2 1612) of the one or more antenna panels.

The one or more configuration parameters may comprise PUCCHconfiguration parameters (e.g., PUCCHConfig-1 and PUCCHConfig-2;PUCCHConfig-3, and PUCCHConfig-4) for the one or more antenna panels(e.g., Panel-1 1610, Panel-2 1612) for an uplink BWP (e.g., UL BWP-1,UL-BWP-2) of the plurality of uplink BWPs of the cell. First PUCCHconfiguration parameters (e.g., PUCCHConfig-1) of the PUCCHconfiguration parameters for the uplink BWP (e.g., UL BWP-1) may beassociated with a first antenna panel (e.g., Panel-1 1610) of the one ormore antenna panels. Second PUCCH configuration parameters (e.g.,PUCCHConfig-2) of the PUCCH configuration parameters for the uplink BWP(e.g., UL BWP-1) may be associated with a second antenna panel (e.g.,Panel-2 1612) of the one or more antenna panels.

First PUCCH configuration parameters (e.g., PUCCHConfig-3) of the PUCCHconfiguration parameters for the uplink BWP (e.g., UL BWP-2) may beassociated with a first antenna panel (e.g., Panel-1 1610) of the one ormore antenna panels. Second PUCCH configuration parameters (e.g.,PUCCHConfig-4) of the PUCCH configuration parameters for the uplink BWP(e.g., UL BWP-2) may be associated with a second antenna panel (e.g.,Panel-2 1612) of the one or more antenna panels.

Configuration parameters (e.g., SRSConfig-1, PUSCHConfig-1,PUCCHConfig-1) for an uplink BWP (e.g., UL BWP-1) of a cell may beassociated with an antenna panel (e.g., Panel-1 1610). The wirelessdevice 1614 may send (e.g., transmit) an uplink signal (e.g., SRS, atransport block, a preamble, PUSCH, PUCCH, UL-SCH, MAC-CE), for example,based on the uplink BWP being an active uplink BWP of the cell, theantenna panel being active, and/or the configuration parameters. Thewireless device 1614 may send (e.g., transmit) the uplink signal via anuplink resource (e.g., SRS, PUSCH, PUCCH) indicated by the configurationparameters.

One or more TRPs may serve the wireless device 1614. An uplinktransmission via an antenna panel of the one or more antenna panels maybe received by a TRP of the one or more TRPs. An uplink transmission(e.g., SRS, PUSCH, PUCCH) may be received, for example, via a firstantenna panel (e.g., Panel-1 1610) of the one or more antenna panelsand/or by a first TRP (e.g., TRP-1) of the one or more TRPs. An uplinktransmission (e.g., SRS, PUSCH, PUCCH) may be received, for example, viaa second antenna panel (e.g., Panel-2 1612) of the one or more antennapanels and/or by a second TRP (e.g., TRP-2) of the one or more TRPs.

One or more TRPs may serve the wireless device 1614. A wireless device1614 may receive a downlink transmission, for example, from a TRP of theone or more TRPs via an antenna panel of the one or more antenna panels.A wireless device 1614 may receive a downlink transmission (e.g., PDCCH,PDSCH), for example, from a first TRP (e.g., TRP-1) of the one or moreTRPs via a first antenna panel (e.g., Panel-1 1610) of the one or moreantenna panels. A wireless device 1614 may receive a downlinktransmission (e.g., PDCCH, PDSCH), for example, from a second TRP (e.g.,TRP-2) of the one or more TRPs via a second antenna panel (e.g.,Panel-2) of the one or more antenna panels.

FIG. 17 shows an example timeline of antenna panel deactivation andactivation. A wireless device 1614 may receive, from a base station1714, one or more messages (e.g., at time T0 1702) comprising one ormore configuration parameters that indicate a configured uplink grant(e.g., configured grant Type 1, configured grant Type 2) for an antennapanel of one or more antenna panels of the wireless device 1614. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T11704). The wireless device 1614 may suspend the configured uplink grantfor the antenna panel, for example, based on the deactivating theantenna panel (time T2 1706). The wireless device 1614 may activate theantenna panel indicated by a panel-specific index (time T3 1708). Thewireless device 1614 may initialize the suspended and/or configureduplink grant for the antenna panel, for example, based on the activatingthe antenna panel (e.g., at time T4 1710). The wireless device 1614 maysend (e.g., transmit) an uplink signal (e.g., a transport block)corresponding to/for the suspended and/or configured uplink grant viathe antenna panel (time T5 in FIG. 17 ), for example, based on theinitializing the suspended and/or configured uplink grant.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., at time T0 1702). The one or more messages maycomprise one or more configuration parameters. The one or moreconfiguration parameters may indicate a configured uplink grant (e.g.,configured grant Type 1, configured grant Type 2) for an antenna panelof one or more antenna panels of the wireless device 1614. The one ormore configuration parameters may indicate a configured uplink grant(e.g., configured grant Type 1, configured grant Type 2), for example,for/per an antenna panel of the one or more antenna panels for/per anuplink BWP of a plurality of uplink BWPs for/per a cell (e.g., PCell,SCell, SpCell, PsCell).

The one or more configuration parameters may indicate panel-specificindices for the one or more antenna panels. Each antenna panel of theone or more antenna panels may be indicated by a respectivepanel-specific index of the panel-specific indices. An antenna panel ofthe one or more antenna panels may be indicated by a panel-specificindex.

An antenna panel may be active. The wireless device 1614 may send (e.g.,transmit) an uplink signal/channel (e.g., SRS, PUSCH, PUCCH, etc.) viathe antenna panel, for example, based on the antenna panel being active.The wireless device 1614 may receive a downlink signal/channel (e.g.,CSI-RS, SS/PBCH block, DCI, PDCCH, PDSCH) via the antenna panel, forexample, based on the antenna panel being active.

An antenna panel may be set to a deactivated state. The wireless device1614 may not send (e.g., transmit) an uplink signal/channel (e.g., SRS,PUSCH, PUCCH, etc.) via the antenna panel, for example, based on theantenna panel being set to a deactivated state. The wireless device 1614may not receive a downlink signal/channel (e.g., CSI-RS, SS/PBCH block,DCI, PDCCH, PDSCH) via the antenna panel, for example based on theantenna panel being set to a deactivated state. The wireless device 1614may not monitor for a downlink signal/channel (e.g., CSI-RS, SS/PBCHblock, DCI, PDCCH, PDSCH) via the antenna panel, for example, based onthe antenna panel being set to a deactivated state.

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T11702). The wireless device 1614 may deactivate the antenna panel withthe panel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. An antenna panel indicator field may bepresent/configured in the DCI message. The wireless device 1614 maydeactivate the antenna panel indicated by the panel-specific index, forexample, based on receiving an RRC signaling message. An antenna panelindicator field may be present/configured in the RRC signaling message.The wireless device 1614 may deactivate the antenna panel with thepanel-specific index, for example, based on or in response to receivinga MAC-CE signaling message. An antenna panel indicator field may bepresent/configured in the MAC-CE signaling message.

The antenna panel indicator field may indicate a specific antenna panel.The antenna panel indicator field may comprise a value that indicates apanel-specific index of the antenna panel. The wireless device 1614 maydeactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may set the antenna panel to a deactivated state.

The antenna panel indicator field may indicate a second antenna panel ofthe one or more antenna panels. The second antenna panel may beindicated by a second panel-specific index. The antenna panel indicatorfield may comprise a value indicating the second panel-specific index.The second antenna panel may be different from the antenna panel. Thesecond antenna panel may be different from the antenna panel, forexample, based on the second panel-specific index being different fromthe panel-specific index. The wireless device 1614 may switch from theantenna panel to the second antenna panel, for example, based on theantenna panel indicator field indicating the second antenna panel whichmay be different from the antenna panel. The wireless device 1614 mayset the antenna panel to a deactivated state, for example, based onswitching from the antenna panel to the second antenna panel. Thewireless device 1614 may set the second antenna panel to an activatedstate, for example, based on switching from the antenna panel to thesecond antenna panel. The wireless device 1614 may deactivate theantenna panel, for example, based on the switching from the antennapanel to the second antenna panel. The wireless device 1614 may activatethe second antenna panel, for example, based on switching from theantenna panel to the second antenna panel.

The one or more configuration parameters may indicate a timer valueassociated with an inactivity timer for the antenna panel (or for thecell). The antenna panel may be active when the inactivity timer isrunning. The inactivity timer may expire. The wireless device 1614 maydeactivate the antenna panel based on the inactivity timer expiring. Thewireless device 1614 may restart the inactivity timer associated withthe timer value, for example, based on sending (e.g., transmitting) anuplink signal (e.g., MAC PDU, PUSCH, PUCCH, SRS, transport block,configured uplink grant) via the antenna panel. The wireless device 1614may restart the inactivity timer associated with the timer value, forexample, based on receiving a downlink signal (e.g., transport block,configured downlink assignment, PDCCH, PDCH, DCI) via the antenna panel.The downlink signal may indicate an uplink grant (e.g., for the antennapanel). The downlink signal may indicate a downlink assignment (e.g.,for the antenna panel).

The antenna panel may be active. The wireless device 1614 may deactivatethe antenna panel autonomously. The wireless device 1614 may deactivatethe antenna panel without an indication (e.g., RRC, DCI, MAC-CE, etc.)from the base station 1714, for example, based on the wireless device1614 deactivating the antenna panel autonomously. The wireless device1614 may deactivate the antenna panel autonomously, for example, basedon at least one measurement on the antenna panel. The at least onemeasurement may have a lower quality (e.g., lower SINR, lower L1-RSRP,higher BLER, etc.) than a threshold (e.g., indicated by the one or moreconfiguration parameters).

The wireless device 1614 may suspend the configured uplink grant for theantenna panel, for example, based on the deactivating the antenna panel(time T2 1706). The wireless device 1614 may keep a configuration of theconfigured uplink grant for the antenna panel, for example, based onsuspending the configured uplink grant for the antenna panel. Thewireless device 1614 may not be enabled/allowed to use (or send (e.g.,transmit) corresponding to) the configured uplink grant for the antennapanel, for example, based on suspending the configured uplink grant forthe antenna panel. The wireless device 1614 may resume using (or sendinga message corresponding to) the configured uplink grant for the antennapanel based on the antenna panel being (re-)activated (e.g., the antennapanel being active).

The wireless device 1614 may not use (or send (e.g., transmit)corresponding to) the configured uplink grant when the antenna panel isactivated/reactivated, for example, based on the wireless device 1614not suspending the configured uplink grant for the antenna panel and/orthe deactivating the antenna panel. The base station 1714 may send(e.g., transmit), to the wireless device 1614, new configurationparameters to reconfigure the configured uplink grant for the antennapanel, for example, based on the wireless device 1614 not suspending theconfigured uplink grant for the antenna panel, deactivating the antennapanel, and/or the antenna panel being activated/reactivated. Sending(e.g., transmitting) the new configuration parameters for the configureduplink grant may increase the signaling overhead, signalingmessages/exchange, and/or latency of the communication.

The antenna panel indicated by a panel-specific index may be set to adeactivated state (e.g., at time T2). The wireless device 1614 mayactivate the antenna panel indicated by the panel-specific index (timeT3 1708). The wireless device 1614 may activate the antenna panel, forexample, based on the antenna panel being set to a deactivated state.The wireless device 1614 may activate the antenna panel indicated by thepanel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. The DCI message may comprise an antenna panelindicator field.

The wireless device 1614 may activate the antenna panel indicated by thepanel-specific index, for example, based on receiving an RRC signalingmessage. An antenna panel indicator field may be present/configured inthe RRC signaling message. The wireless device 1614 may activate theantenna panel indicated by the panel-specific index, for example, basedon receiving a MAC-CE signaling message. An antenna panel indicatorfield may be indicated in the MAC-CE signaling.

The antenna panel indicator field may indicate the antenna panel. Theantenna panel indicator field may comprise a value indicating thepanel-specific index of the antenna panel. The wireless device 1614 mayactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may indicate the antenna panel as set to an activated state, forexample, based on activating the antenna panel.

A second antenna panel of the one or more antenna panels may be active.The second antenna panel may be indicated with a second panel-specificindex. The antenna panel may be set to a deactivated state. The antennapanel indicator field may indicate the antenna panel. A value of theantenna panel indicator field may comprise a value that is equal to thepanel-specific index of the antenna panel. The second antenna panel maybe different from the antenna panel. The second panel-specific index maybe different from the panel-specific index. The wireless device 1614 mayswitch from the second antenna panel to the antenna panel, for example,based on the antenna panel indicator field indicating the antenna panelbeing different from the second antenna panel.

The wireless device 1614 may set the antenna panel to an activatedstate, for example, based on switching from the second antenna panel tothe antenna panel. The wireless device 1614 may set the second antennapanel to a deactivated state, for example, based on the switching fromthe second antenna panel to the antenna panel. The wireless device 1614may deactivate the second antenna panel, for example, based on theswitching from the second antenna panel to the antenna panel. Thewireless device 1614 may activate the antenna panel, for example, basedon the switching from the second antenna panel to the antenna panel.

The antenna panel may be set to a deactivated state. The wireless device1614 may autonomously activate the antenna panel. The wireless device1614 may activate the antenna panel without an indication (e.g., RRC,DCI, MAC-CE, etc.) from the base station 1714. The wireless device 1614may autonomously activate the antenna panel based on at least onemeasurement of the antenna panel. The at least one measurement may havea higher quality (e.g., higher SINR, higher L1-RSRP, lower BLER, etc.)than a second threshold (e.g., indicated by the one or moreconfiguration parameters).

The one or more configuration parameters may indicate a timer valueassociated with an inactivity timer for the second antenna panel and/orfor the cell. The second antenna panel may be active during running ofthe inactivity timer. The inactivity timer may expire. The wirelessdevice 1614 may switch from the second antenna panel to the antennapanel (e.g., default panel), for example, based on the inactivity timerexpiring.

The wireless device 1614 may initialize the suspended and/or configureduplink grant for the antenna panel, for example, based on the activatingthe antenna panel (e.g., at time T4 1710). The wireless device 1614 mayreinitialize the suspended and/or configured uplink grant for theantenna panel, for example, based on the activating the antenna panel.The wireless device 1614 may send (e.g., transmit) an uplink signal(e.g., a transport block) corresponding to/for the suspended and/orconfigured uplink grant via the antenna panel (time T5 1712 in FIG. 17), for example, based on the initializing the suspended and/orconfigured uplink grant. The wireless device 1614 may send (e.g.,transmit), via the antenna panel (e.g., at time T5 1712), an uplinksignal (e.g., a transport block) corresponding to/for the suspendedand/or configured uplink grant.

The wireless device 1614 may send (e.g., transmit) an uplink signal(e.g., a transport block) via at least one uplink resource indicated bythe (suspended) configured uplink grant via the antenna panel (at timeT5 1712), for example, based on the initializing the suspended and/orconfigured uplink grant. The wireless device 1614 may send (e.g.,transmit) an uplink signal (e.g., a transport block), for example, basedon the reinitializing the (suspended) configured uplink grant and/or viaat least one uplink resource indicated by the (suspended) configureduplink grant via the antenna panel (e.g., at time T5 1712).

FIG. 18 shows an example timeline of antenna panel deactivation andactivation. A wireless device 1614 may receive, from a base station1714, one or more messages (e.g., at time T0 1802) that comprise one ormore configuration parameters that indicate a SRS resource configurationfor an antenna panel of one or more antenna panels at the wirelessdevice 1614. The wireless device 1614 may deactivate the antenna panel(e.g., at time T1 1804). The wireless device 1614 may suspend the SRSresource configuration for the antenna panel based on the deactivatingthe antenna panel (e.g., at time T2 1806). The wireless device 1614 mayactivate the antenna panel (e.g., time T3 1808). The wireless device1614 may initialize the SRS resource configuration (e.g., suspended SRSresource configuration) for the antenna panel based on the activatingthe antenna panel (e.g., at time T4 1810). The wireless device 1614 maysend (e.g., transmit) an uplink signal (e.g., SRS) corresponding to thesuspended resource configuration (e.g., suspended SRS resourceconfiguration) via the antenna panel (e.g., at time T5 1812), forexample, based on the initializing the suspended SRS resourceconfiguration for the antenna panel.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., time T0 1802). The one or more messages maycomprise one or more configuration parameters. The one or moreconfiguration parameters may indicate a SRS resource configuration(e.g., semi-persistent SRS configuration, periodic SRS configuration,aperiodic SRS configuration) for an antenna panel of one or more antennapanels at the wireless device 1614. The one or more configurationparameters may indicate an SRS resource configuration (e.g.,semi-persistent SRS configuration, periodic SRS configuration, aperiodicSRS configuration), for example, for/per an antenna panel of the one ormore antenna panels for/per an uplink BWP of a plurality of uplink BWPsfor/per a cell (e.g., PCell, SCell, SpCell, PsCell).

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T11804). The wireless device 1614 may deactivate the antenna panel, forexample, based on receiving an RRC signaling message. The wirelessdevice 1614 may deactivate the antenna panel, for example, based onreceiving a MAC-CE signaling message. The wireless device 1614 maydeactivate the antenna panel, for example, based on receiving a DCImessage. The wireless device 1614 may deactivate the antenna panel, forexample, based on an inactivity timer expiring. The wireless device 1614may deactivate the antenna panel autonomously.

The wireless device 1614 may suspend the SRS resource configuration forthe antenna panel based on the deactivating the antenna panel (e.g., attime T2 1806). The wireless device 1614 may keep a configuration of theSRS resource configuration for the antenna panel, for example, based onsuspending the SRS resource configuration for the antenna panel. Thewireless device 1614 may not be enabled/allowed to use (or send (e.g.,transmit) corresponding to) the SRS resource configuration for theantenna panel, for example, based on suspending the SRS resourceconfiguration for the antenna panel. The wireless device 1614 may beenabled to use/resume using (or sending corresponding to) the SRSresource configuration for the antenna panel, for example, based on theantenna panel being activated/reactivated (e.g., the antenna panel beingactive).

The wireless device 1614 may not use (or send (e.g., transmit)corresponding to) the SRS resource configuration, for example, based onthe wireless device 1614 not suspending the SRS resource configurationfor the antenna panel, deactivating the antenna panel, and/or theantenna panel being activated/reactivated. wireless device 1614 The basestation 1714 may send (e.g., transmit) new configuration parameters, tothe wireless device 1614, to reconfigure the SRS resource configurationfor the antenna panel, for example, based on the antenna panel beingactivated/reactivated. The wireless device 1614 may not suspend the SRSresource configuration for the antenna panel, for example, based ondeactivating the antenna panel. Sending (e.g., transmitting) the newconfiguration parameters for the SRS resource configuration may increasethe signaling overhead, signaling messages/exchange, and/or latency ofthe communication.

The antenna panel may be set to a deactivated state. The wireless device1614 may activate the antenna panel (e.g., time T3 1808). The wirelessdevice 1614 may activate the antenna panel, for example, based on theantenna panel being set to a deactivated state. The wireless device 1614may activate the antenna panel, for example, based on receiving a DCImessage. The wireless device 1614 may activate the antenna panel, forexample, based on receiving an RRC signaling message. The wirelessdevice 1614 may activate the antenna panel, for example, based onreceiving a MAC-CE signaling message. The wireless device 1614 mayactivate the antenna panel autonomously. The wireless device 1614 mayactivate the antenna panel, for example, based on an inactivity timerexpiring.

The wireless device 1614 may initialize the SRS resource configuration(e.g., suspended SRS resource configuration) for the antenna panel basedon the activating the antenna panel (e.g., at time T4 1810). Thewireless device 1614 may reinitialize the SRS resource configuration(e.g., suspended SRS resource configuration) for the antenna panel, forexample, based on the activating the antenna panel (time T4 1810).

The wireless device may send (e.g., transmit) an uplink signal (e.g.,SRS) via the antenna panel (e.g., at time T5 1812), for example, basedon the initializing the SRS resource configuration (e.g., suspended SRSresource configuration) for the antenna panel. The uplink signal may,for example, be an uplink signal corresponding to/for the suspended SRSresource configuration. Based on the reinitializing the SRS resourceconfiguration (e.g., suspended SRS resource configuration) for theantenna panel, the wireless device 1614 may send (e.g., transmit) anuplink signal (e.g., SRS) corresponding to/for the SRS resourceconfiguration (e.g., suspended SRS resource configuration) via theantenna panel (e.g., at time T5 1812).

The wireless device 1614 may initialize the SRS resource configuration(e.g., suspended SRS resource configuration) for the antenna panel. Thewireless device 1614 may send (e.g., transmit) an uplink signal (e.g.,SRS) via at least one uplink resource indicated by the SRS resourceconfiguration (e.g., suspended SRS resource configuration) via theantenna panel (e.g., time T5 1812). The wireless device 1614 mayreinitialize the SRS resource configuration (e.g., suspended SRSresource configuration) for the antenna panel. The wireless device 1614may send (e.g., transmit) an uplink signal (e.g., SRS) via at least oneuplink resource indicated by the SRS resource configuration (e.g.,suspended SRS resource configuration) via the antenna panel (e.g., attime T5 1812).

FIG. 19 shows an example timeline of antenna panel deactivation. Awireless device 1614 may receive, from a base station 1714, one or moremessages (e.g., at time T0 1902) that comprise one or more configurationparameters that indicate configurations for/per an antenna panel of theone or more antenna panels for/per an uplink BWP of a plurality ofuplink BWPs for/per a cell (e.g., PCell, SCell, SpCell, PsCell). Thewireless device 1614 may deactivate the antenna panel (e.g., at time T11904). The wireless device 1614 may stop sending via UL-SCH, RACH, PUCCHvia the deactivated antenna panel (e.g., at time T2 1906), for example,based on the deactivating the antenna panel. The wireless device 1614may stop reporting CSI via the deactivated antenna panel (e.g., at timeT2 1906), for example, based on the deactivating the antenna panel. Thewireless device 1614 may stop sending SRS via the deactivated antennapanel (e.g., at time T2 1906), for example, based on the deactivatingthe antenna panel. The wireless device 1614 may clear a configureduplink grant (e.g., at time T2 1906), for example, based on thedeactivating the antenna panel. The wireless device 1614 may suspend aconfigured uplink grant via the deactivated antenna panel (e.g., at timeT2 1906), for example, based on the deactivating the antenna panel.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., at time T0 1902). The one or more messages maycomprise one or more configuration parameters. The one or moreconfiguration parameters may indicate configurations for/per an antennapanel of the one or more antenna panels for/per an uplink BWP of aplurality of uplink BWPs for/per a cell (e.g., PCell, SCell, SpCell,PsCell).

The one or more configuration parameters may indicate panel-specificindices for the one or more antenna panels. Each antenna panel of theone or more antenna panels may be indicated by a respectivepanel-specific index of the panel-specific indices. An antenna panel ofthe one or more antenna panels may be indicated by a panel-specificindex.

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T11904). The wireless device 1614 may deactivate the antenna panel withthe panel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. An antenna panel indicator field may bepresent/configured in the DCI message. The wireless device 1614 maydeactivate the antenna panel with the panel-specific index, for example,based on receiving an RRC signaling message. An antenna panel indicatorfield may be present/configured in the RRC signaling message. Thewireless device 1614 may deactivate the antenna panel with thepanel-specific index, for example, based on or in response to receivinga MAC-CE signaling message. An antenna panel indicator field may bepresent/configured in the MAC-CE signaling message.

The antenna panel indicator field may indicate a specific antenna panel.The antenna panel indicator field may comprise a value indicates apanel-specific index of the antenna panel. The wireless device 1614 maydeactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may set the antenna panel to a deactivated state.

The antenna panel indicator field may indicate a second antenna panel ofthe one or more antenna panels. The second antenna panel may beindicated by a second panel-specific index. The antenna panel indicatorfield may comprise a value indicating the second panel-specific index.The second antenna panel may be different from the antenna panel. Thesecond antenna panel may be different from the antenna panel, forexample, based on the second panel-specific index being different fromthe panel-specific index. The wireless device 1614 may switch from theantenna panel to the second antenna panel, for example, based on theantenna panel indicator field indicating the second antenna panel whichmay be different from the antenna panel. The wireless device 1614 mayset the antenna panel to a deactivated state, for example, based onswitching from the antenna panel to the second antenna panel. Thewireless device 1614 may set the second antenna panel to an activatedstate, for example, based on switching from the antenna panel to thesecond antenna panel. The wireless device 1614 may deactivate theantenna panel, for example, based on the switching from the antennapanel to the second antenna panel. The wireless device 1614 may activatethe second antenna panel, for example, based on switching from theantenna panel to the second antenna panel.

The wireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels at time T0in FIG. 19 . The wireless device 1614 may deactivate an antenna panel ofthe one or more antenna panels at time T1 in FIG. 19 . The deactivatedantenna panel may be used for uplink transmissions (e.g., UL-SCH, PUSCH,PUCCH, SRS, CSI report, etc.). The deactivated antenna panel may be anuplink antenna panel. The wireless device 1614 may stop sending (e.g.,transmitting) via UL-SCH via the deactivated antenna panel (e.g., attime T2 1906), for example, based on the deactivating the antenna panel.The wireless device 1614 may stop sending (e.g., transmitting) via RACHvia the deactivated antenna panel (e.g., at time T2 1906), for example,based on the deactivating the antenna panel. The wireless device 1614may stop sending uplink control messages (e.g., PUCCH messages) via thedeactivated antenna panel (e.g., at time T2 1906), for example, based onthe deactivating the antenna panel. The wireless device 1614 may stopreporting CSI for the deactivated) antenna panel (e.g., at time T21906), for example, based on the deactivating the antenna panel. Thewireless device 1614 may stop sending SRS via the deactivated antennapanel (e.g., at time T2 1906), for example, based on the deactivatingthe antenna panel. The one or more configuration parameters may indicatea first configured uplink grant configuration (e.g., of configured grantType 2) for the antenna panel. The one or more configuration parametersmay indicate a second configured uplink grant configuration (e.g., ofconfigured grant Type 1) for the antenna panel. The wireless device 1614may clear the first configured uplink grant (e.g., of configured grantType 2) via the deactivated antenna panel (e.g., at time T2 1906), forexample, based on the deactivating the antenna panel. The wirelessdevice 1614 may suspend the second configured uplink grant (e.g., ofconfigured grant Type 1) via the (deactivated) antenna panel (e.g., attime T2 1906), for example, based on the deactivating the antenna panel.

The wireless device 1614 may not send (e.g., transmit) a transport blockvia at least one uplink radio resource indicated by the configureduplink grant, for example, based on clearing a configured uplink grant.The wireless device 1614 may not send (e.g., transmit) a transport blockfor the configured uplink grant, for example, based on clearing aconfigured uplink grant. The base station 1714 may assign/allocate theconfigured uplink grant (or the at least one uplink radio resourceindicated by the configured uplink grant) to a second wireless device1614. The wireless device 1614 may send (e.g., transmit) a transportblock via the at least one uplink radio resource indicated by theconfigured uplink grant, for example, based on not clearing theconfigured uplink grant. Sending the transport block via the at leastone uplink radio resource may result in a collision with the secondwireless device 1614. The wireless device 1614 may not use theconfigured uplink grant for an uplink transmission, for example, basedon the clearing the configured uplink grant. The wireless device 1614may release the configured uplink grant, for example, based on clearingthe configured uplink grant. The wireless device 1614 may release aconfiguration of the configured uplink grant, for example, based onreleasing the configured uplink grant. The wireless device 1614 mayclear the configured uplink grant. The base station 1714 mayreconfigure/reschedule the wireless device 1614 with the configureduplink grant via a message (e.g., an explicit message, PDCCH signalingmessage, MAC CE message, RRC message, etc.). Thereconfiguring/rescheduling may enable the wireless device 1614 touse/reuse at least one uplink radio resource indicated by the configureduplink grant.

FIG. 20 shows an example timeline of antenna panel deactivation. Thewireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels (e.g., attime T0 2002). The wireless may deactivate an antenna panel of the oneor more antenna panels (e.g., at time T1 2004). The deactivated antennapanel may be used for downlink transmissions (e.g., DL-SCH, PDSCH,PDCCH, etc.). The wireless device 1614 may stop monitoring downlinkcontrol channels (e.g., PDCCH) via the deactivated antenna panel (e.g.,at time T2 2004), for example based on deactivating the antenna panel.The wireless device 1614 may stop receiving downlink messages (e.g.,DL-SCH) via the deactivated antenna panel (e.g., at time T2 2004), forexample, based on deactivating the antenna panel. The wireless device1614 may clear a configured downlink assignment via the deactivatedantenna panel (e.g., at time T2 2004), for example, based ondeactivating the antenna panel.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., at time T0). The one or more messages may compriseone or more configuration parameters. The one or more configurationparameters may indicate configurations for/per an antenna panel of theone or more antenna panels for/per an uplink BWP of a plurality ofdownlink BWPs for/per a cell (e.g., PCell, SCell, SpCell, PsCell).

The one or more configuration parameters may indicate panel-specificindices for the one or more antenna panels. Each antenna panel of theone or more antenna panels may be indicated by a respectivepanel-specific index of the panel-specific indices. An antenna panel ofthe one or more antenna panels may be indicated by a panel-specificindex.

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T12004). The wireless device 1614 may deactivate the antenna panel withthe panel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. An antenna panel indicator field may bepresent/configured in the DCI message. The wireless device 1614 maydeactivate the antenna panel with the panel-specific index, for example,based on receiving an RRC signaling message. An antenna panel indicatorfield may be present/configured in the RRC signaling message. Thewireless device 1614 may deactivate the antenna panel with thepanel-specific index, for example, based on or in response to receivinga MAC-CE signaling message. An antenna panel indicator field may bepresent/configured in the MAC-CE signaling message.

The antenna panel indicator field may indicate a specific antenna panel.The antenna panel indicator field may comprise a value indicates apanel-specific index of the antenna panel. The wireless device 1614 maydeactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may set the antenna panel to deactivated.

The antenna panel indicator field may indicate a second antenna panel ofthe one or more antenna panels. The second antenna panel may beindicated by a second panel-specific index. The antenna panel indicatorfield may comprise a value indicating the second panel-specific index.The second antenna panel may be different from the antenna panel. Thesecond antenna panel may be different from the antenna panel, forexample, based on the second panel-specific index being different fromthe panel-specific index. The wireless device 1614 may switch from theantenna panel to the second antenna panel, for example, based on theantenna panel indicator field indicating the second antenna panel whichmay be different from the antenna panel. The wireless device 1614 mayset the antenna panel to a deactivated state, for example, based onswitching from the antenna panel to the second antenna panel. Thewireless device 1614 may set the second antenna panel activated, forexample, based on switching from the antenna panel to the second antennapanel. The wireless device 1614 may deactivate the antenna panel, forexample, based on the switching from the antenna panel to the secondantenna panel. The wireless device 1614 may activate the second antennapanel, for example, based on switching from the antenna panel to thesecond antenna panel.

The wireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels (e.g., attime T0 2002). The wireless device 1614 may deactivate an antenna panelof the one or more antenna panels (e.g., at time T1). The deactivatedantenna panel may be used for downlink transmissions (e.g., DL-SCH,PDSCH, PDCCH, etc.). The deactivated antenna panel may be a downlinkantenna panel. The wireless device 1614 may stop monitoring downlinkcontrol channels (e.g., PDCCH) via the deactivated antenna panel (e.g.,at time T2 2004), for example based on deactivating the antenna panel.The wireless device 1614 may stop receiving downlink messages (e.g.,DL-SCH) via the deactivated antenna panel (e.g., at time T2 2004), forexample, based on deactivating the antenna panel. The one or moreconfiguration parameters may indicate a configured downlink assignment(e.g., SPS) for the antenna panel. The wireless device 1614 may clearthe configured downlink assignment via the deactivated antenna panel(e.g., at time T2 2004), for example, based on deactivating the antennapanel.

The wireless device 1614 may not receive a transport block via at leastone downlink radio resource indicated by the configured downlinkassignment, for example, based on clearing a configured downlinkassignment. The wireless device 1614 may not receive a transport blockfor the configured downlink assignment, for example, based on clearing aconfigured downlink assignment. The base station 1714 mayassign/allocate the configured downlink assignment (or the at least onedownlink radio resource indicated by the configured downlink assignment)to a second wireless device 1614. The wireless device 1614 may not clearthe configured downlink assignment assigned/allocated to the secondwireless device 1614. The wireless device 1614 may monitor, via the atleast one downlink radio resource indicated by the configured downlinkassignment, for a transport block destined to the second wireless device1614. The wireless device 1614 may not use the configured downlinkassignment for a downlink transmission, for example, based on clearingthe configured downlink assignment. The wireless device 1614 may releasethe configured downlink assignment, for example, based on the clearingthe configured downlink assignment. The wireless device 1614 may releasea configuration of the configured downlink assignment, for example,based on releasing the configured downlink assignment. The wirelessdevice 1614 may clear the configured downlink assignment. The basestation 1714 may reconfigure/reschedule, via a message (e.g., anexplicit message, PDCCH signaling message, MAC CE message, RRC message,etc.), the wireless device 1614 with the configured downlink assignment.The reconfiguring/rescheduling may enable the wireless device 1614 touse/reuse at least one downlink radio resource indicated by theconfigured downlink assignment.

FIG. 21 shows an example timeline of antenna panel activation. Thewireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels (e.g., attime T0 2102). The wireless device 1614 may activate an antenna panel ofthe one or more antenna panels (e.g., at time T1 2104). The wirelessdevice 1614 may send (e.g., transmit) via an uplink channel (e.g.,UL-CH, RACH, PUCCH) via the activated antenna panel (e.g., at time T22106), for example, based on activating the antenna panel. The wirelessdevice 1614 may report CSI for the activated antenna panel (e.g., attime T2 2106), for example, based on the activating the antenna panel.The wireless device 1614 may send (e.g., transmit) SRS via the activatedantenna panel (e.g., at time T2 2106), for example, based on activatingthe antenna panel. The wireless device 1614 may (re-)initialize theconfigured uplink grant on the activated antenna panel (e.g., at time T22106), for example, based on activating the antenna panel.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., at time T0 2102). The one or more messages maycomprise one or more configuration parameters. The one or moreconfiguration parameters may indicate configurations for/per an antennapanel of the one or more antenna panels for/per an uplink BWP of aplurality of uplink BWPs for/per a cell (e.g., PCell, SCell, SpCell,PsCell).

The one or more configuration parameters may indicate panel-specificindices for the one or more antenna panels. Each antenna panel of theone or more antenna panels may be indicated by a respectivepanel-specific index of the panel-specific indices. An antenna panel ofthe one or more antenna panels may be indicated by a panel-specificindex.

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T12104). The wireless device 1614 may deactivate the antenna panel withthe panel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. An antenna panel indicator field may bepresent/configured in the DCI message. The wireless device 1614 maydeactivate the antenna panel with the panel-specific index, for example,based on receiving an RRC signaling message. An antenna panel indicatorfield may be present/configured in the RRC signaling message. Thewireless device 1614 may deactivate the antenna panel with thepanel-specific index, for example, based on or in response to receivinga MAC-CE signaling message. An antenna panel indicator field may bepresent/configured in the MAC-CE signaling message.

The antenna panel indicator field may indicate a specific antenna panel.The antenna panel indicator field may comprise a value that indicates apanel-specific index of the antenna panel. The wireless device 1614 maydeactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may set the antenna panel to a deactivated state.

The antenna panel indicator field may indicate a second antenna panel ofthe one or more antenna panels. The second antenna panel may beindicated by a second panel-specific index. The antenna panel indicatorfield may comprise a value indicating the second panel-specific index.The second antenna panel may be different from the antenna panel. Thesecond antenna panel may be different from the antenna panel, forexample, based on the second panel-specific index being different fromthe panel-specific index. The wireless device 1614 may switch from theantenna panel to the second antenna panel, for example, based on theantenna panel indicator field indicating the second antenna panel whichmay be different from the antenna panel. The wireless device 1614 mayset the antenna panel to a deactivated state, for example, based onswitching from the antenna panel to the second antenna panel. Thewireless device 1614 may set the second antenna panel activated, forexample, based on switching from the antenna panel to the second antennapanel. The wireless device 1614 may deactivate the antenna panel, forexample, based on the switching from the antenna panel to the secondantenna panel. The wireless device 1614 may activate the second antennapanel, for example, based on switching from the antenna panel to thesecond antenna panel.

The wireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels (e.g., attime T0 2102). The wireless device 1614 may activate an antenna panel ofthe one or more antenna panels (e.g., at time T1 2104). The activatedantenna panel may be used for uplink transmissions (e.g., UL-SCH, PUSCH,PUCCH, SRS, CSI report, etc.). The activated antenna panel may be anuplink antenna panel. The wireless device 1614 may send (e.g., transmit)via an uplink channel (e.g., UL-SCH) via the (activated) antenna panel(e.g., at time T2 2106), for example, based on activating the antennapanel. The wireless device 1614 may send (e.g., transmit) via a randomaccess channel (e.g., RACH) via the activated antenna panel (e.g., attime T2 2106), for example, based on activating the antenna panel. Thewireless device 1614 may send (e.g., transmit), via the activatedantenna panel, an uplink channel message (e.g., PUCCH message) (e.g., attime T2 2106), for example, based on activating the antenna panel. Thewireless device 1614 may report CSI for the activated antenna panel(e.g., at time T2 2106), for example, based on the activating theantenna panel. The wireless device 1614 may send (e.g., transmit) SRSvia the activated antenna panel (e.g., at time T2 2106), for example,based on activating the antenna panel. The one or more configurationparameters may indicate a configuration of a configured uplink grant(e.g., of configured grant Type 1) for the antenna panel. The wirelessdevice 1614 may (re-)initialize the configured uplink grant on theactivated antenna panel (e.g., at time T2 2106), for example, based onactivating the antenna panel.

FIG. 22 shows an example timeline of antenna panel activation. Awireless device 1614 may receive, from a base station 1714, one or moremessages (e.g., at time T0 2202) that comprise one or more configurationparameters. The one or more configuration parameters may indicateconfigurations for/per an antenna panel of the one or more antennapanels for/per an uplink BWP of a plurality of uplink BWPs for/per acell (e.g., PCell, SCell, SpCell, PsCell). The wireless device 1614 mayactivate an antenna panel (e.g., at time T1 2204) that may be used fordownlink transmissions (e.g., DL-SCH, PDSCH, PDCCH, etc.). The wirelessdevice 1614 may monitor, via the activated antenna panel, a downlinkchannel (e.g., PDCCH) (e.g., at time T2 2206), for example, based on theactivating the antenna panel. The wireless device 1614 may receiveDL-SCH on the activated antenna panel (e.g., at time T2 2206), forexample, based on activating the antenna panel.

A wireless device 1614 may receive, from a base station 1714, one ormore messages (e.g., at time T0 2202). The one or more messages maycomprise one or more configuration parameters. The one or moreconfiguration parameters may indicate configurations for/per an antennapanel of the one or more antenna panels for/per an uplink BWP of aplurality of uplink BWPs for/per a cell (e.g., PCell, SCell, SpCell,PsCell).

The one or more configuration parameters may indicate panel-specificindices for the one or more antenna panels. Each antenna panel of theone or more antenna panels may be indicated by a respectivepanel-specific index of the panel-specific indices. An antenna panel ofthe one or more antenna panels may be indicated by a panel-specificindex.

The antenna panel indicated by a panel-specific index may be active. Thewireless device 1614 may deactivate the antenna panel (e.g., at time T12204). The wireless device 1614 may deactivate the antenna panel withthe panel-specific index, for example, based on receiving a DCI message(e.g., DCI format 1_1, DCI format 0_1, DCI format 0_0, DCI format 2_0,and the like) via a PDCCH. An antenna panel indicator field may bepresent/configured in the DCI message. The wireless device 1614 maydeactivate the antenna panel with the panel-specific index, for example,based on receiving an RRC signaling message. An antenna panel indicatorfield may be present/configured in the RRC signaling message. Thewireless device 1614 may deactivate the antenna panel with thepanel-specific index, for example, based on or in response to receivinga MAC-CE signaling message. An antenna panel indicator field may bepresent/configured in the MAC-CE signaling message.

The antenna panel indicator field may indicate a specific antenna panel.The antenna panel indicator field may comprise a value that indicates apanel-specific index of the antenna panel. The wireless device 1614 maydeactivate the antenna panel, for example, based on the antenna panelindicator field indicating the antenna panel. The wireless device 1614may set the antenna panel to a deactivated state.

The antenna panel indicator field may indicate a second antenna panel ofthe one or more antenna panels. The second antenna panel may beindicated by a second panel-specific index. The antenna panel indicatorfield may comprise a value indicating the second panel-specific index.The second antenna panel may be different from the antenna panel. Thesecond antenna panel may be different from the antenna panel, forexample, based on the second panel-specific index being different fromthe panel-specific index. The wireless device 1614 may switch from theantenna panel to the second antenna panel, for example, based on theantenna panel indicator field indicating the second antenna panel whichmay be different from the antenna panel. The wireless device 1614 mayset the antenna panel to a deactivated state, for example, based onswitching from the antenna panel to the second antenna panel. Thewireless device 1614 may set the second antenna panel to activated, forexample, based on switching from the antenna panel to the second antennapanel. The wireless device 1614 may deactivate the antenna panel, forexample, based on the switching from the antenna panel to the secondantenna panel. The wireless device 1614 may activate the second antennapanel, for example, based on switching from the antenna panel to thesecond antenna panel.

The wireless device 1614 may receive, from the base station 1714, one ormore configuration parameters for one or more antenna panels (e.g., attime T0 2022). The wireless device 1614 may activate an antenna panel ofthe one or more antenna panels (e.g., at time T1 2204). The activatedantenna panel may be used for downlink transmissions (e.g., DL-SCH,PDSCH, PDCCH, etc.). The activated antenna panel may be a downlinkantenna panel. The wireless device 1614 may monitor, via the activatedantenna panel, a downlink channel (e.g., PDCCH) (e.g., at time T2 2206),for example, based on the activating the antenna panel. The wirelessdevice 1614 may receive DL-SCH on the activated antenna panel (e.g., attime T2 2206), for example, based on activating the antenna panel.

FIGS. 23A and 23B show example procedures for activating anddeactivating antenna panels. FIG. 23A shows an example procedure foractivating and deactivating downlink and uplink antenna panels. Thewireless device may activate or deactivate panels in any order andperform none, some or all of the procedures described, for example,based on a context of wireless states and activating/deactivatingantenna panels.

In step 2302, a wireless device may receive RRC configuration for one ormore antenna panels. In step 2304, the wireless device may receive anactivation command for an antenna panel. In step 2306, the wirelessdevice may determine whether the antenna panel is an uplink panel or adownlink panel. If (e.g., based on a determination that) the antennapanel is an uplink panel, step 2308 may be performed. In step 2308, thewireless device may activate the uplink antenna panel. In step 2308,wireless device may send, via the uplink antenna panel, via uplinkchannels (e.g., UL-SCH, RACH, and/or PUCCH). In step 2308, wirelessdevice may report CSI for the activated uplink antenna panel. In step2308, wireless device may transmit SRS.

In step 2312, the wireless device may receive a deactivation command foran antenna panel of the one or more antenna panels. In step 2314, thewireless device may determine whether the antenna panel is an uplinkpanel or a downlink panel. If (e.g., based on a determination that) theantenna panel is an uplink panel, step 2316 may be performed. In step2316, the wireless device may deactivate the uplink antenna panel. Instep 2316, the wireless device may suspend an SRS resource configurationon the deactivated antenna panel. In step 2316, the wireless device maystop sending (e.g., transmitting) via uplink channels (e.g., UL-SCH,RACH, PUCCH). In step 2316, the wireless device may stop reporting CSIfor the deactivated uplink antenna panel. In step 2316, the wirelessdevice may stop sending SRS via the deactivated antenna panel. In step2316, the wireless device may clear a configured uplink grant ofconfigured grant Type 2. In step 2316, the wireless device may suspend aconfigured uplink grant (e.g., configured grant Type 1).

In step 2320, the wireless device may receive an activation command forthe antenna panel. In step 2322, the wireless device may determinewhether the antenna panel is an uplink panel or a downlink panel. If(e.g., based on a determination that) the antenna panel is an uplinkpanel, step 2324 may be performed. In step 2324, the wireless device mayactivate the antenna panel. In step 2324, the wireless device mayinitialize the suspended SRS resource configuration for the activatedantenna panel. In step 2324, the wireless device may send (e.g.,transmit) via uplink channels (e.g., UL-SCH, RACH, PUCCH). In step 2324,the wireless device may report CSI for the activated uplink antennapanel. In step 2324, the wireless device may send (e.g., transmit) SRS.In step 2324, the wireless device may (re-) initialize suspendedconfigured uplink grants (e.g., of configured grant Type 1) for theactivated antenna panel. In step 2328, the wireless device may send atransport step for the configured uplink grant.

If (e.g., based on a determination that) the antenna panel is a downlinkpanel in step 2306, step 2310 may be performed. In step 2310, thewireless device may activate the downlink antenna panel. In step 2310,the wireless device may start monitoring (e.g., via the activateddownlink panel) a downlink channel (e.g., PDCCH). In step 2310, thewireless device may start receiving (e.g., via the activated downlinkpanel) downlink messages (e.g., DL-SCH).

If (e.g., based on a determination that) the antenna panel is a downlinkpanel in step 2312, step 2318 may be performed. In step 2318, thewireless device may deactivate the downlink antenna panel. In step 2318,the wireless device may stop monitoring a downlink channel (e.g.,PDCCH). In step 2318, the wireless device may stop receiving downlinkmessages (e.g., DL-SCH). In step 2318, the wireless device may clear aconfigured downlink assignment.

In step 2322, the wireless device may determine whether the antennapanel is an uplink panel or a downlink panel. If (e.g., based on adetermination that) the antenna panel is a downlink panel, step 2326 maybe performed. In step 2326, the wireless device may activate thedownlink antenna panel. In step 2326, the wireless device may startmonitoring a downlink channel (e.g., PDCCH). In step 2326, the wirelessdevice may start receiving downlink messages (e.g., DL-SCH).

FIG. 23B shows an example procedure for activating and deactivatinguplink antenna panels with a suspended uplink grant. FIG. 23B shows thata subset of operations of 23A may be used by a wireless device (and/oran associated base station). In step 2330, a wireless device may receiveRRC configuration for one or more antenna panels. In step 2332, thewireless device may receive a deactivation command for an antenna panelof the one or more antenna panels. In step 2334, the wireless device maydeactivate the antenna panel and/or suspend a configured uplink grant onthe deactivated antenna panel. In step 2336, the wireless device mayreceive an activation command for the antenna panel. In step 2338, thewireless device may activate the antenna panel and/or initialize thesuspend configured uplink grant on the activated antenna panel. In step2338, the wireless device may send (e.g., transmit) a transport step forthe configured uplink grant.

The one or more configuration parameters (e.g., received by a wirelessdevice in FIGS. 17-22 ) may comprise one or more reference signals(e.g., periodic CSI-RSs, SS/PBCH blocks, etc.) for a cell. The wirelessdevice may detect a beam failure, for example, based on the one or morereference signals. The wireless device may assess that a quality of theone or more reference signals is worse (e.g., higher BLER, lowerL1-RSRP, lower SINR, etc.) than a threshold for a consecutive quantityof previous measurements. The one or more configuration parameters mayindicate the threshold. The one or more configuration parameters mayindicate a consecutive quantity of previous measurements. The wirelessdevice may initiate a beam failure recovery procedure (e.g., RACH based,PUCCH based, MAC-CE based) for the cell, for example, based on thedetecting the beam failure.

The wireless device may deactivate at least one antenna panel of one ormore antenna panels, for example, as a part of the beam failure recoveryprocedure. The wireless device may detect the beam failure, for example,based on monitoring a CORESET via the at least one antenna panel. Thewireless device may perform, via the at least one antenna panel, thebeam failure recovery procedure (e.g., sending (e.g., transmitting) anuplink signal for the BFR procedure). The wireless device may abort thebeam failure recovery procedure, for example, based on deactivating theat least one antenna panel of one or more antenna panels as a part ofthe beam failure recovery procedure.

The wireless device may activate at least one antenna panel of one ormore antenna panels, for example, as a part of beam failure recoveryprocedure. The wireless device may monitor, via the at least one antennapanel, a CORESET via the at least one antenna panel. At least onereference signal associated with the CORESET may have a better qualitythan the threshold. The wireless device may abort the beam failurerecovery procedure, for example, based on activating the at least oneantenna panel of one or more antenna panels as a part of the beamfailure recovery procedure.

Aborting the beam failure recovery procedure may decrease the batterypower consumption for the wireless device. Aborting the beam failurerecovery procedure may decrease the uplink interference to otherwireless devices and/or other cells.

FIGS. 24 and 25A-25F shows an example of multiple antenna panels andantenna activation information that may be provided to a base station. Awireless device may comprise multiple antenna panels that may beindividually activated and deactivated.

A base station may know/store/receive information indicative of anactivation status of antenna panels of a wireless device, for example,based on the base station instructing the wireless device to activate ordeactivate antenna panels. A base station may not know an activationstatus of antenna panels of a wireless device, for example, based on thewireless device activating or deactivating one or more antenna panelsautonomously. If a base station is not aware of (e.g., store informationassociated with) an activation status of a particular antenna panel of awireless device, the base station may still send (e.g., transmit)downlink signals via deactivated antenna panel(s), monitor uplinkchannels/resources via deactivated uplink antenna panel(s) and/orschedule transmissions for deactivated antenna panels. The base stationmay attempt to send (e.g., transmit) a downlink message (e.g., a DCImessage or MAC-CE message) via deactivated antenna panels. Thedeactivated antenna panels may not be monitored by the wireless device.This sending (e.g., transmitting) to deactivated antenna panels mayresult in missed reception of the downlink signal, reduced reliabilityand/or increased delay/latency. The base station may monitor uplinkchannels/resources configured for deactivated antenna panels. Themonitoring may result in power waste/overuse/inefficiencies, forexample, based on no uplink transmissions via these deactivated antennapanels and monitoring of these uplink resources. The base station mayschedule the wireless device to send (e.g., transmit) an uplink message(e.g., PUSCH message) via one of the deactivated antenna panels. Thebase station may transmit a DCI message indicating a deactivated antennapanel for an uplink transmission (e.g., PUSCH transmission). Thewireless device may reactivate the deactivated antenna panel for theuplink transmission (e.g., PUSCH transmission), which was initiallydeactivated for power-saving purposes. Activating a deactivated antennapanel may cause a wait of up to 3 ms.

A wireless device may activate or deactivate one or more antenna panelsof a plurality of antenna panels. The wireless device may send an uplinkmessage to the base station indicating an activation status of one,some, or all of the plurality of panels. The uplink message may, forexample, be sent via a physical uplink control channel message (e.g.,periodic or aperiodic PUCCH report) or via a MAC CE message with a fieldindicating antenna panel activation status (e.g.,activated/deactivated). A control channel message (e.g., PDCCH message)may provide advantages of resources that may be more (e.g., already,quickly, etc.) available (e.g., lower latency), but use more overhead(e.g., less efficient). A MAC CE message may use an uplink resourceindicated by grant that may have more latency, but may use moreefficient communication (e.g., less overhead).

The wireless device may deactivate an antenna panel, for example, basedon an expiry of an inactivity timer, a downlink signal comprising asecond indication to deactivate the first antenna panel, activating asecond antenna panel, or completing reception of a scheduled message viathe first antenna panel. A wireless device may activate an antenna panelfor transmissions (e.g., with a BWP) and start an inactivity timer. Thewireless device may reset the inactivity timer, for example, based oncommunications via the antenna panel. The wireless device may deactivatean antenna panel, for example, based on expiration of the inactivitytimer.

The base station may transmit a downlink signal (e.g., DCI message,MAC-CE message, RRC message) indicating a deactivation of a firstantenna panel. The wireless device may deactivate the first antennapanel. The wireless device may send (e.g., transmit) a message toconfirm that the first antenna panel is deactivated (e.g., the messagemay comprise an acknowledgement of the reception of the downlink signalindicating the deactivation of the first antenna panel).

The wireless device may have two antenna panels comprising a firstantenna panel and a second antenna panel. The wireless device may have acapability of activating one of the antenna panels at a time. The firstantenna panel of the wireless device may be active. The wireless devicemay receive, from a base station, a DCI scheduling a transmission (e.g.,an uplink transmission such as a PUSCH message, PUCCH message, SRSmessage or a downlink transmission such as PDSCH message) via the secondantenna panel. The wireless device may deactivate the first antennapanel and activate the second antenna panel, for example, based on thewireless device being unable to be active on both antenna panels at thesame time. The wireless device may deactivate the first antenna paneland activate the second antenna panel to receive/send/perform thetransmission scheduled by the DCI. The base station may not be aware(e.g., have stored an indication) of the single active antenna panelcapability of the wireless device. The base station may not be able toanticipate the deactivation of the first antenna panel. The wirelessdevice may send the indication of antenna panel status to inform thebase station about the deactivation of the first antenna panel.

The wireless device may receive, from a base station, a DCI scheduling atransmission (e.g., an uplink transmission such as a PUSCH message, aPUCCH message, an SRS message or a downlink transmission such as a PDSCHmessage) via the first antenna panel. The wireless device may deactivatethe first antenna panel after completing the scheduled transmission.This deactivation may save power. The wireless device may be active on aprimary antenna panel. The wireless device may use the first antennapanel as a secondary antenna panel. The wireless device may deactivatethe first antenna panel, for example, based on the wireless devicecompleting an uplink/downlink transmission via the first antenna panel.The first antenna panel may be the secondary antenna panel, which may beactivated upon demand. The base station may not know (e.g., store)information about the primary and the secondary antenna panels at thewireless device. The antenna panel organization may be implementationinformation at the wireless device side.

FIG. 24 shows an example of multiple antenna panels and an uplinkreport. A wireless device 1614 may receive, from a base station, one ormore messages. The one or more messages may comprise one or moreconfiguration parameters for one or more antenna panels (e.g., Panel-12402, Panel-2 2404, Panel-3 2406, Panel-4 2408) of the wireless device1614. The one or more configuration parameters may indicatepanel-specific indices (e.g., indicated by a higher layer parameter) forthe one or more antenna panels. Each antenna panel of the one or moreantenna panels may be indicated by a respective panel-specific index ofthe panel-specific indices. A first antenna panel (e.g., Panel-1 2402)of the one or more antenna panels may be indicated by a firstpanel-specific index (e.g., Panel-1 index). A second antenna panel(e.g., Panel-2 2404) of the one or more antenna panels may be indicatedby a second panel-specific index (e.g., Panel-2 index). A third antennapanel (e.g., Panel-3 2406) of the one or more antenna panels may beindicated by a third panel-specific index (e.g., Panel-3 index). Afourth antenna panel (e.g., Panel-4 2408) of the one or more antennapanels may be indicated by a fourth panel-specific index (e.g., Panel-4index).

The base station may configure the wireless device 1614 with resources(e.g., indicated by the one or more configuration parameters) for areport 2410. The report 2410 may comprise uplink control informationand/or antenna panel status. The wireless device 1614 may besemi-statically configured (e.g., by higher layers) to performtransmission of the report 2410 via the resources (e.g., PUSCHresources, PUCCH resources). The one or more configuration parametersmay indicate a time domain behavior (e.g., aperiodic, periodic,semi-persistent) for the report 2410. The one or more configurationparameters may indicate a periodicity for the report 2410. The one ormore configuration parameters may indicate a slot offset for the report2410.

The wireless device 1614 may activate at least one antenna panel (e.g.,Panel-1 2402, Panel-3 2406) of the one or more antenna panels. Thewireless device 1614 may use the report 2410 to indicate, to the basestation, the activated at least one antenna panel. The wireless device1614 may deactivate at least one antenna panel (e.g., Panel-2 2404,Panel-4 2408) of the one or more antenna panels. The wireless device1614 may use the report 2410 to indicate, to the base station, thedeactivated at least one antenna panel. The wireless device 1614 maysend (e.g., transmit) the report 2410 via uplink channel resources(e.g., PUSCH resources) and/or via uplink channel resources (e.g., PUCCHresources). The resources may be periodic, aperiodic, and/orsemi-persistent.

The wireless device 1614 may deactivate at least one antenna panel(e.g., Panel-2 2404, Panel-4 2408) of the one or more antenna panels.The wireless device 1614 may deactivate the at least one antenna panelautonomously. The wireless device 1614 may set one or more fields in thereport 2410 to a first value (e.g., zero, one, or any other value), forexample, based on deactivating the at least one antenna panel. Each ofthe one or more fields may correspond to at least one antenna panel.Each of the one or more fields may correspond to a panel-specific indexof the at least one antenna panel. The deactivated at least one antennapanel may comprise the second panel (e.g., Panel-2 2404) and the fourthpanel (e.g., Panel-4 2408). The one or more fields (e.g., in theActivation Status) corresponding to the second panel-specific index(e.g., Panel-2 index in the Antenna Panel) of the second panel and thefourth panel-specific index (e.g., Panel-4 index in the Antenna Panel)of the fourth panel may comprise the first value (e.g., zero, one, orany other value) in the report 2410. The deactivated at least oneantenna panel may comprise the first panel (e.g., Panel-1 2402), thesecond panel (e.g., Panel-2 2404) and the fourth panel (e.g., Panel-42408). The one or more fields, (e.g., in the Activation Status)corresponding to the first panel-specific index (e.g., Panel-1 index inthe Antenna Panel) of the first panel, the second panel-specific index(e.g., Panel-2 index in the Antenna Panel) of the second panel, and/orthe fourth panel-specific index (e.g., Panel-4 index in the AntennaPanel) of the fourth panel, may comprise the first value (e.g., zero,one or any other value) in the report 2410.

The wireless device 1614 may activate at least one antenna panel (e.g.,Panel-1 2402, Panel-3 2406) of the one or more antenna panels. Thewireless device 1614 may activate the at least one antenna panelautonomously. The wireless device 1614 may set one or more second fieldsin the report 2410 to a second value (e.g., zero, one, or any othervalue), for example, based on the activating the at least one antennapanel. Each of the one or more second fields may correspond to arespective antenna panel of the at least one antenna panel. Each of theone or more second fields may correspond to at least one panel-specificindex of the at least one antenna panel. The activated at least oneantenna panel may comprise the first panel (e.g., Panel-1 2402) and thethird panel (e.g., Panel-3 2406). The one or more second fields (e.g.,in the Activation Status) corresponding to the first panel-specificindex (e.g., Panel-1 index in the Antenna Panel) of the first panel andthe third panel-specific index (e.g., Panel-3 index in the AntennaPanel) of the third panel may comprise the second value (e.g., one,zero, or any other value) in the report 2410. The activated at least oneantenna panel may comprise the first panel (e.g., Panel-1 2402), thesecond panel (e.g., Panel-2 2404) and the third panel (e.g., Panel-32406). The one or more second fields (e.g., in the Activation Status)corresponding to the first panel-specific index (e.g., Panel-1 index inthe Antenna Panel) of the first panel, the second panel-specific index(e.g., Panel-2 index in the Antenna Panel) of the second panel and thethird panel-specific index (e.g., Panel-3 index in the Antenna Panel) ofthe third panel may comprise the second value (e.g., one, zero or anyother value) in the report 2410. The wireless device 1614 may send(e.g., transmit) the report 2410, via the resources (e.g., PUSCHresources, PUCCH resources) of a cell (e.g., PCell, SCell configuredwith PUCCH, SpCell, PsCell, etc.). The base station may determineactivation status (e.g., activated, deactivated) of the one or moreantenna panels, for example, based on receiving the report 2410.

The one or more second fields corresponding to the first panel-specificindex (e.g., Panel-1 index in the Antenna Panel) and the thirdpanel-specific index (e.g., Panel-3 index in the Antenna Panel) maycomprise the second value (e.g., one, zero, or any other value). Thebase station may determine that the first panel (e.g., Panel-1 2402) andthe third panel (e.g., Panel-3 2406) are active at the wireless device1614. The one or more fields corresponding to the second panel-specificindex (e.g., Panel-2 index in the Antenna Panel) and the fourthpanel-specific index (e.g., Panel-4 index in the Antenna Panel) maycomprise the first value (e.g., zero, one, or any other value), the basestation may determine that the second panel (e.g., Panel-2 2404) and thefourth panel (e.g., Panel-4 2408) are set to a deactivated state at thewireless device 1614.

FIGS. 25A, FIG. 25B, FIG. 25C, FIG. 25D, FIG. 25E, and FIG. 25F showexamples of multiple antenna panels and indications ofactivation/deactivation of the multiple antenna panels. The wirelessdevice 1614 may deactivate at least one antenna panel (e.g., Panel-22404, Panel-4 2408) of one or more antenna panels. The wireless device1614 may deactivate the at least one antenna panel autonomously. Thewireless device 1614 may send (e.g., transmit) a MAC-CE message (e.g.,Panel activation/deactivation MAC-CE message, Panel deactivation MAC-CEmessage), for example, based on deactivating the at least one antennapanel. The deactivating the at least one antenna panel may trigger aprocess to send the MAC-CE message. The wireless device 1614 may send(e.g., transmit) the MAC-CE message to indicate, to the base station,the deactivated at least one antenna panel. The wireless device 1614 maysend (e.g., transmit) the MAC-CE message to indicate, to the basestation, at least one antenna panel-specific-index associated with thedeactivated at least one antenna panel.

The wireless device 1614 may activate at least one antenna panel (e.g.,Panel-1 2402, Panel-3 2406) of one or more antenna panels. The wirelessdevice 1614 may activate the at least one antenna panel autonomously.The wireless device 1614 may send (e.g., transmit) a MAC-CE message(e.g., Panel activation/deactivation MAC-CE message, Panel activationMAC-CE message), for example, based on activating the at least oneantenna panel. Activating the at least one antenna panel may trigger aprocess to send the MAC-CE message. The wireless device 1614 may send(e.g., transmit) the MAC-CE message to indicate, to the base station,the activated at least one antenna panel. The wireless device 1614 maysend (e.g., transmit) the MAC-CE message to indicate, to the basestation, at least one antenna panel-specific-index associated with theactivated at least one antenna panel.

FIG. 25B, FIG. 25C, FIG. 25D, FIG. 25E, and FIG. 25F show examples offields within a MAC CE to indicate activation status of antenna panelsof the wireless device. FIG. 25B shows an example of a portion of a MACCE message comprising one or more indications of activation status ofone or more antenna panels. The MAC-CE message may be associated with anLCID in a corresponding MAC header (not shown). The LCID may indicate alogical channel instance of the MAC-CE message. A size of the LCID maycomprise a value (e.g., 6 bits or any other value). The LCID mayindicate that the MAC-CE message may deactivate the at least one antennapanel. The LCID may indicate that the MAC-CE message may activate the atleast one antenna panel. The MAC-CE message may comprise one or morefields. The one or more fields may comprise a first field, a secondfield, and/or a third field.

The first field may indicate at least one panel-specific index (e.g.,Panel ID_0, . . . , Panel-ID_(M−1)) of the at least one antenna panel.Each of the at least one panel-specific index may indicate apanel-specific index associated with an antenna panel of the at leastone antenna panel. Each antenna panel of the at least one antenna panelmay be indicated by a panel-specific-index of the at least onepanel-specific index. The one or more configuration parameters mayindicate the at least one panel-specific index.

The deactivated at least one antenna panel may comprise the second panel(e.g., Panel-2 2404) and the fourth panel (e.g., Panel-4 2408). M may betwo (e.g., two panels set to a deactivated state), for example, based onthe deactivated second panel and fourth panel. A first panel identifier(e.g., Panel ID_0) may be equal to the second panel-specific index ofthe second antenna panel. The first panel identifier (e.g., Panel ID_0)may be equal to the fourth panel-specific index of the fourth antennapanel. A second panel identifier (e.g., Panel ID_1) may be equal to thefourth panel-specific index of the fourth antenna panel. The secondpanel identifier (e.g., Panel ID_1) may be equal to the secondpanel-specific index of the second antenna panel. A first length of thefirst field may comprise a first value (e.g., M*N bits). M may be afirst number of the deactivated at least one antenna panel. N may becomputed based on a second number of the one or more antenna panels, forexample, N=log 2(the second number). The first field length may be 8bits, for example, based on N=2 bits and the second number being theinverse log of 2 (e.g., 4.

The activated at least one antenna panel may comprise the first panel(e.g., Panel-1 2402) and the third panel (e.g., Panel-3 2406). M may betwo (e.g., two panels set to an activated state), for example, based onthe activated first panel and third panel. A first panel identifier(e.g., Panel ID_0) may be equal to the first panel-specific index of thefirst antenna panel. The first panel identifier (e.g., Panel ID_0) maybe equal to the third panel-specific index of the third antenna panel. Asecond panel identifier (e.g., Panel ID_1) may be equal to the firstpanel-specific index of the first antenna panel. The second panelidentifier (e.g., Panel ID_1) may be equal to the third panel-specificindex of the third antenna panel. A first length of the first field maycomprise a first value (e.g., M*N bits). M may be a first number of theactivated at least one antenna panel. N may be computed based on asecond number of the one or more antenna panels (for example, N=log2(the second number)). The first field length may be 8 bits, forexample, based on N=2 bits and the second number being the inverse logof 2 (e.g., 4.

At least one first antenna panel of the one or more antenna panels maybe active (e.g., Panel-1 2402, Panel-3 2406). At least one secondantenna panel of the one or more antenna panels may be set to adeactivated state (e.g., Panel-2 2404, Panel-4 2408). The MAC-CE messagemay comprise at least one first antenna panel-specific index of the atleast one first antenna panel and at least one second antennapanel-specific index of the at least one second antenna panel. M may befour (e.g., M may be equal to a number of the one or more antennapanels). The first panel identifier (e.g., Panel ID_0) may be equal tothe first panel-specific index of the first antenna panel. The secondpanel identifier (e.g., Panel ID_1) may be equal to the secondpanel-specific index of the second antenna panel. The third panelidentifier (e.g., Panel ID_2) may be equal to the third panel-specificindex of the third antenna panel. The fourth panel identifier (e.g.,Panel ID_3) may be equal to the fourth panel-specific index of thefourth antenna panel. A first length of the first field may comprise afirst value (e.g., M*N bits). M may be the number of the one or moreantenna panels. N may be computed based on the number (e.g., N=log 2(thenumber)). The first field length may be 8 bits, for example, based onN=2 bits and the second number being the inverse log of 2 (e.g., 4.

The second field (e.g., A/D) may indicate whether the MAC-CE message isused to activate or deactivate the at least one antenna panel indicatedby the at least one panel-specific index (e.g., Panel ID_0, . . . ,Panel-ID_(M−1)). Setting the second field to “1” (or any other value)for an antenna panel of the at least one antenna panel may indicate anactivation of the antenna panel. Setting the second field to “0” (or anyother value) for an antenna panel of the at least one antenna panel mayindicate a deactivation of the antenna panel. A second length of thesecond field may comprise a second value.

The wireless device 1614 may activate the first panel (e.g.,Panel-12402). The wireless device 1614 may set, for the MAC-CE message,the first field to the first panel-specific index of the first panel andthe second field to “1” (or any other value). The wireless device 1614may activate the third panel (e.g., Panel-3 2406). The wireless device1614 may set, for the MAC-CE message, the first field to the thirdpanel-specific index of the third panel and the second field to “1” (orany other value).

The wireless device 1614 may deactivate the second panel (e.g., Panel-22404). The wireless device 1614 may set, for the MAC-CE message, thefirst field to the second panel-specific index of the second panel andthe second field to “0” (or any other value). The wireless device 1614may deactivate the fourth panel (e.g., Panel-4 2408). The wirelessdevice 1614 may set, for the MAC-CE message, the first field to thefourth panel-specific index of the fourth panel and the second field to“0” (or any other value). The third field may indicate an R field. The Rfield may indicate a reserved bit. The R field may be set to zero or anyother value. A third length of the third field may comprise a thirdvalue.

FIG. 25C shows an example of a portion of a MAC CE message with a bitmapindication of activation status of one or more antenna panels. TheMAC-CE message may comprise one or more fields. The one or more fieldsmay comprise a first field. The one or more fields (C₀ . . . C_(M-1))may comprise individual values (e.g., one bit, two bits, etc.) thatindicate a status of some of or each of the antenna panels of thewireless device. A position of the individual value indicates theantenna panel of the wireless device. The bitmap may be indexed byposition to indicate the antenna panel. A first value (e.g., 0, 1 or anyother value) at position C3 may indicate that an antenna panel withindex 3 is set to a deactivated state. A second value (e.g., 1, 0 or anyother value) at position C3 may indicate that an antenna panel withindex 3 is set to an activated state.

The first field may comprise panel-specific indices (e.g., C₀, . . .C_(M-1)) of the one or more antenna panels. M may be a number of the oneor more antenna panels. A panel-specific index field (e.g., C_(i) field)of the panel-specific indices may indicate an activation/deactivationstatus of an antenna panel of the one or more antenna panels. Theantenna panel may be indicated by a panel-specific index. Thepanel-specific index may be based on i (e.g., equal to i, equal to i−1,equal to i+1, etc.). The antenna panel with the panel-specific indexbeing based on i may be set to an activated state, for example, based onthe panel-specific index field (C_(i) field) being set to a value (e.g.,one, zero, or any other value). The antenna panel with thepanel-specific index being based on i may be set to a deactivated state,for example, based on the panel-specific index field (C_(i) field) beingset to a value (e.g., zero, one, or any other value).

FIG. 25D shows an example of a portion of a MAC CE message with a panelindex and indication of activation status of an antenna panel. Eachantenna panel of the one or more antenna panels may be identified by arespective panel-specific index of the panel-specific indices. A MAC CEmessage may comprise one or more fields. The one or more fields maycomprise fields (e.g., Panel Index 1 . . . Panel Index M−1) that holdvalues for panel indices, fields (e.g., A/D) that hold values indicatingantenna panel activation status (e.g., activated, deactivated), and oneor more reserved bit fields (e.g., R). The message may include allantenna panels or a portion of the antenna panels. The message mayinclude indications for antenna panels that have changed antenna panelactivation status (e.g., active to deactivated, or deactivated toactive).

FIG. 25E shows an example of a portion of a MAC CE message with groupingof panel indices with a single indication of activation status of thegrouping of antenna panel indices. Each antenna panel of the one or moreantenna panels may be indicated by a respective panel-specific index ofthe panel-specific indices. A MAC CE message may comprise one or morefields. The one or more fields may comprise an activation status (e.g.,A/D), one or more antenna panel indices (e.g., Panel Index 1 . . . PanelIndex M−1), and one or more reserve bits (e.g., R). The wireless device1614 may indicate a set of antenna panels that share a same/similaractivation status. The wireless device 1614 may indicate an activatedstatus and antenna panel indices of Panel-1 and Panel-3.

FIG. 25F shows an example of a portion of a MAC CE message with a bitmapindication of activation status of a plurality of antenna panels. Eachantenna panel of the one or more antenna panels may be indicated by aplacement of a bit within the bitmap, for example, based on a respectivepanel-specific index of the panel-specific indices. A MAC CE message maycomprise one or more fields. The one or more fields may comprise reservebits (e.g., R) and activation status bits (e.g., C₀ to C₃) with each bitrepresenting antenna status (e.g., activated, deactivated) of one ormore antenna panels. A value in C0 may represent Panel-1 2402. A valuein C₁ may represent Panel-2 2404. A value in C₂ may represent Panel-32406. A value in C₃ may represent Panel-4 2408.

The wireless device 1614 may send (e.g., transmit) the MAC-CE message(e.g., of the form seen in any of FIGS. 25B-25F or others), via at leastone uplink resource (e.g., PUSCH resource). An uplink grant may indicatethe at least one uplink resource. The base station may determineactivation status (e.g., activated, deactivated) of the one or moreantenna panels, for example, based on the base station receiving theMAC-CE message.

The base station may receive the MAC_CE message with the first fieldbeing set to the second panel-specific index of the second panel and thesecond field being set to “0” (or any other value) The base station maydetermine that the wireless device 1614 deactivates the second panel(e.g., Panel-2 2404). The base station may receive the MAC_CE messagewith the first field being set to the first panel-specific index of thefirst panel and the second field being set to “1” (or any other value).The base station may determine that the wireless device 1614 activatesthe first panel (e.g., Panel-1 2402). The base station may receive theMAC_CE message with a panel-specific index field (e.g., C_0 field) setto “1” (or any other value). The base station may determine that thewireless device 1614 activates the first panel (e.g., Panel-1 2402). Thebase station may receive the MAC_CE message with a panel-specific indexfield (e.g., C_1 field) set to “0” (or any other value). The basestation may determine that the wireless device 1614 activates the secondpanel (e.g., Panel-2 2404).

A wireless device 1614 may indicate (e.g., report), to a base station,an RF capability of the wireless device 1614 via a capability signalingof the wireless device 1614. The RF capability may be receptioncapability and/or transmission capability. The base station maydetermine whether the wireless device 1614 may receive (and/or transmit)simultaneous physical channels and/or RSs via different receiving(and/or transmitting) beams from one or more component carriers in thedownlink (and/or uplink) at the same time instant, for example, based onthe capability signaling.

A base station may configure (e.g., in intra-band CA) one or morecomponent carriers in the same band. The one or more component carriersmay be powered by a same and a single RF chain. The wireless device 1614may apply a single and a same set of TX/RX spatial parameters to the oneor more component carriers in the same band at a same (or substantiallythe same) time instant. Applying the single and the same set of TX/RXspatial parameters may impose limitations on flexibility of multiplexingphysical channels (e.g., PDSCH/PUSCH, PDCCH/PUCCH, SRS, PRACH, etc.)and/or reference signals (RSs) (e.g., CSI-RS, SSB, etc.), for example,within and/or across the one or more component carriers.

A first channel/RS of a first serving cell (e.g., PCell, BWP) and asecond channel/RS of a second serving cell (e.g., SCell, BWP) may bemultiplexed in the same OFDM symbols, for example if the firstchannel/RS is associated with a second channel/RS (e.g., QCL-ed with QCLtype as QCL TypeD). A wireless device 1614 may transmit/receive (e.g.,simultaneously transmit/receive) the multiplexed first channel/RS andthe second channel/RS in the uplink/downlink.

One or more first antenna ports of a first serving cell and one or moresecond antenna ports of a second serving cell may not be associated(e.g., may not be QCL-ed with QCL type as QCL-TypeD). A wireless device1614 may not determine (e.g., may not infer) one or more channelproperties of the one or more first antenna ports of the first servingcell from the one or more second antenna ports of the second servingcell.

The first channel/RS (e.g., PDSCH/PUSCH, PDCCH/PUCCH, SRS, PRACH,CSI-RS, SSB, etc.) and the second channel/RS (e.g., PDSCH/PUSCH,PDCCH/PUCCH, SRS, PRACH, CSI-RS, SSB, etc.) may not be associated (e.g.,may not be QCL-ed with QCL type as QCL-TypeD). A base station mayconfigure the first channel/RS may with a first QCL assumption and thesecond channel/RS with a second QCL assumption. A firsttransmission/reception of the first channel/RS and a secondtransmission/reception of the second channel/RS may overlap (e.g., in atleast one OFDM symbol). The wireless device 1614 may not perform thefirst transmission/reception and the second transmission/receptionsimultaneously, for example, if the first QCL assumption and the secondQCL assumption are not the same.

FIG. 26 shows an example of a TCI State information element. A basestation may configure a wireless device with one or more TCI-Stateconfigurations by a state parameter (e.g., higher layer parameter,tci-StatesToAddModList, tci-StatesToReleaseList in IE PDSCH-Config) fora serving cell (e.g., PCell, SCell). The wireless device may detect adownlink message (e.g., PDCCH message) with a DCI for the serving cell.The wireless device may use at least one of the TCI states of the one ormore TCI-State configurations to decode a downlink message (e.g., PDSCHmessage or for a reception of a PDSCH message) scheduled by the downlinkcontrol message (e.g., PDCCH message or DCI message). The DCI messagemay be intended for the wireless device and/or the serving cell of thewireless device.

The DCI may indicate the TCI state. The wireless device may receive adownlink message (e.g., PDSCH message) based on the TCI state. The TCIstate may comprise one or more parameters (e.g., qcl-Type1, qcl-Type2,referenceSignal, etc.). The TCI state may be indicated by a TCI stateindex (e.g., tci-StateId). The wireless device may use the one or moreparameters in the TCI state to configure one or more QCL relationshipsbetween at least one downlink reference signal (e.g., SS/PBCH block,CSI-RS) and at least one DM-RS port of the PDSCH (scheduled by the DCI).A first QCL relationship of the one or more QCL relationships may beconfigured by a QCL parameter (e.g., higher layer parameter, qcl-Type1)for a first DL RS (e.g., indicated by the referenceSignal) of the atleast one DL RS. A second QCL relationship of the one or more QCLrelationships may be configured by a QCL parameter (e.g., higher layerparameter, qcl-Type2) for a second DL RS (e.g., indicated by thereferenceSignal) of the at least one downlink reference signal.

At least one QCL type of the at least one downlink reference signal(e.g., the first DL RS, the second DL RS) may be indicated to thewireless device by a QCL parameter (e.g., higher layer parameter,qcl-Type in QCL-Info). The first QCL relationship of the first DL RS maycomprise a first QCL type (e.g., QCL-TypeA, QCL-TypeB) of the at leastone QCL type. The second QCL relationship of the second DL RS maycomprise a second QCL type (e.g., QCL-TypeC, QCL-TypeD) of the at leastone QCL type. The first QCL type of the first DL RS and the second QCLtype of the second DL RS may not be the same/similar. The first DL RSand the second DL RS may be the same/similar. The first DL RS and thesecond DL RS may be different.

The wireless device may use the one or more parameters in the TCI stateto configure the one or more QCL relationships between the at least onedownlink reference signal (e.g., the first DL RS and the second DL RS).The wireless device may use at least one DM-RS port of the downlinkresource (e.g., PDSCH resource). The at least one DM-RS port of thedownlink resource (e.g., PDSCH resource) may be quasi co-located withthe first DL RS with respect to the first QCL type. The wireless devicemay use the one or more parameters in the TCI state to configure the oneor more QCL relationships between the at least one downlink referencesignal (e.g., the first DL RS and the second DL RS) and the at least oneDM-RS port of the PDSCH. The at least one DM-RS port of the downlinkresource (e.g., PDSCH resource) may be quasi co-located with the secondDL RS with respect to the second QCL type.

FIG. 27 shows an example timeline of TCI State configuration andselection. A base station 1714 may configure (e.g., at time T0 2702) awireless device 1614 with one or more TCI-State configurations. Awireless device 1614 may receive (e.g., at time T1 2704) an activationcommand that indicates an activation/deactivation status of a TCI stateof the one or more TCI-State configurations. The activation command maybe used to map the one or more TCI states to one or more codepoints. ATCI field in a DCI message (e.g., at time T2 2706) may indicate (or maybe equal to) a codepoint of the one or more codepoints.

A base station 1714 may configure (e.g., at time T0 2702) a wirelessdevice 1614 with one or more TCI-State configurations (e.g.,TCI-State_0, TCI-State_1, . . . , TCI-State_63) by a TCI parameter(e.g., higher layer parameter, tci-StatesToAddModList,tci-StatesToReleaseList in IE PDSCH-Config) for a serving cell (e.g.,PCell, SCell). Other TCI-State configurations (e.g., TCI-State_0,TCI-State_1, . . . , TCI-State_63) may be used and be different fordifferent base stations, for example, based on TCI State fields sent(e.g., transmitted) by the base station to the wireless device. Awireless device 1614 may receive (e.g., at time T1 2704) an activationcommand (e.g., TCI States Activation/Deactivation for UE-specific PDSCHMAC CE). The activation command may indicate an activation/deactivationstatus of a TCI state of the one or more TCI-State configurations. Theactivation command may activate one or more TCI states (e.g.,TCI-State_1, TCI-State_45, TCI-State_13, TCI-State_15, TCI-State_33,TCI-State_2, TCI-State_24, TCI-State_8, TCI-State_55, TCI-State_11,TCI-State_62, TCI-State_39) of the one or more TCI-State configurations.The activation command may be used to map the one or more TCI states toone or more codepoints (e.g., 0, 1, 2, . . . 7, etc.). A TCI field in aDCI message (e.g., at time T2 2706) may indicate (or may be equal to) acodepoint of the one or more codepoints.

The mapping between the one or more TCI states and the one or morecodepoints may be one-to-one. A TCI state of the one or more TCI statesmay be mapped to a codepoint of the one or more codepoints. The mappingbetween the one or more TCI states and the one or more codepoints may bemulti-to-one. At least two TCI states of the one or more TCI states maybe mapped to a codepoint of the one or more codepoints. The mappingbetween the one or more TCI states and the one or more codepoints may beone-to-multi. A TCI state of the one or more TCI states may be mapped toat least two codepoints of the one or more codepoints. A codepoint ofthe one or more codepoints may comprise/indicate at least one TCI stateof the one or more TCI states.

A codepoint (e.g., 000, 011, 100) of the one or more codepoints maycomprise/indicate a single TCI state (e.g., TCI-State_1, TCI-State_2,TCI-State_24). The single TCI state may comprise TCI-State_1, forexample, based on the codepoint being equal to a value (e.g., “000” orany other value). The single TCI state may comprise TCI-State_24, forexample, based on the codepoint being equal to a value (e.g., “100” orany other value). The single TCI state may comprise TCI-State_2, forexample, based on the codepoint being equal to a value (e.g., “011” orany other value). A codepoint (e.g., 000, 011, 100) of the one or morecodepoints may comprise/indicate one TCI state (e.g., TCI-State_1,TCI-State_2, TCI-State_24).

A codepoint (e.g., 001, 010, 101, 110, 111) of the one or morecodepoints may comprise/indicate at least two TCI states. The at leasttwo TCI states may comprise TCI-State_45 and TCI-State_13, for example,based on the codepoint being equal to a value (e.g., “001” or any othervalue). The at least two TCI states may comprise TCI-State_62 andTCI-State_39, for example, based on the codepoint being equal to a value(e.g., “111” or any other value).

FIG. 28 shows an example of an overlap between a downlink message and achannel state information reference signal (CSI-RS). A downlink message(e.g., PDSCH message) 2806 may be transmitted by multiple TRPs.Different layers of the downlink message (e.g., PDSCH message) may betransmitted from different TRPs. An aperiodic CSI-RS 2808 may overlapwith a downlink message (e.g., PDSCH message) 2806 received withmultiple beams. Misalignment may occur between one or more TRPs and thewireless device unless the wireless device may determine which beam toapply among the multiple beams to receive and measure the aperiodicCSI-RS 2808. A misalignment between the base station (or one or moreTRPs) and the wireless device on the beam used to receive/measure theaperiodic CSI-RS may cause measurement of the aperiodic CSI-RS to beinaccurate. The inaccurate measurement may result in inaccurate channelestimation. The base station may receive this inaccurate channelestimation report of the aperiodic CSI-RS from the wireless device. Theinaccurate report may affect the scheduling decision at the basestation. The base station may assume that the channel conditions are badbased on the aperiodic CSI-RS report. The base station may assign highertransmission power for a downlink transmission to mitigate the badchannel conditions. Higher transmission power may increase powerconsumption at the base station and/or increased interference to othercells and the wireless devices. Inaccurate scheduling (e.g., selectionof wrong parameters such as power, MCS level) may result in misseddownlink reception at the wireless device. Inaccurate scheduling maylead to retransmission of the downlink signals, increasing latency of asuccessful communication, and/or increasing the power consumption at thewireless device.

The wireless device may select a beam for reception of the CSI-RS 2808overlapping the downlink message (e.g., PDSCH message) 2806 transmittedby multiple TRPs based on a rule shared with the base station. Thewireless device may select the aperiodic CSI-RS 2808 with the beamassociated with the lowest TCI state index. The wireless device mayselect the beam of the TRP transmitting the DCI scheduling the aperiodicCSI-RS 2808. The wireless device may select the beam of the TRPtransmitting the DCI scheduling the downlink message (e.g., PDSCHmessage) 2806. The power consumption at the wireless device and the basestation may be reduced. Interference to other cells/wireless devices maybe reduced and/or avoided. Retransmission of a downlink signal (e.g.,PDSCH signal) may reduce and/or avoided, which may result in a reducedtransmission latency/delay.

Wireless communications are described. A downlink message may betransmitted by multiple TRPs with different layers of the downlinkmessage transmitted from different TRPs and received with multiple beamsof the wireless device. An aperiodic CSI-RS may overlap with thedownlink message received with multiple beams. The wireless device andbase station may share a rule for selection of a beam to receive theaperiodic CSI-RS, for example, when the aperiodic CSI-RS overlaps withthe downlink message. The power consumption at the wireless device andthe base station may be reduced. Interference to other cells/wirelessdevices may be reduced and/or avoided. Retransmission of a downlinksignal (e.g., PDSCH signal) may be reduced and/or avoided.

A backhaul may meet latency and throughput thresholds (e.g., idealbackhaul), for example, as described above. The backhaul may existbetween a first TRP and a second TRP. The first TRP may send (e.g.,transmit) a DCI message scheduling a downlink message (e.g., PDSCHmessage). The downlink message (e.g., PDSCH message) may be sent (e.g.,transmitted) by the first TRP and the second TRP.

A backhaul may not meet latency and/or throughput thresholds (e.g., anon-ideal backhaul) between a first TRP and a second TRP. The first TRPmay send (e.g., transmit) a first DCI message scheduling a firstdownlink message (e.g., PDSCH) transmitted by the first TRP and thesecond TRP transmits a second DCI scheduling a second downlink message(e.g., PDSCH message). The downlink message (e.g., PDSCH message) may besent (e.g., transmitted) by the second TRP.

The aperiodic CSI-RS may overlap with one or more downlink messages(e.g., PDSCH messages), for example, in ideal backhaul and/or non-idealbackhaul. The aperiodic CSI-RS may overlap with two TCI states/QCLassumptions (e.g., may overlap with the downlink message (e.g., PDSCHmessage) with two different TCI states and/or may overlap with thesecond downlink message (e.g., PDSCH message) and the third downlinkmessage (e.g., PDSCH message), each with a respective TCI state). Beammisalignment may occur.

An aperiodic CSI-RS may also overlap with multiple downlink messages(e.g., PDSCH messages). The wireless device may receive a first DCImessage via a first control resource set (CORESET) indicated by a firstCORESET index. The first DCI message may indicate a first schedule for afirst downlink message (e.g., first PDSCH message). The DCI message mayindicate a first TCI state indicating a first RS. The wireless devicemay receive a second DCI message via a second CORESET indicated by asecond CORESET index. The second DCI message may indicate a secondschedule for a second downlink message (e.g., second PDSCH message). Thesecond DCI message may indicate a second TCI state indicating a secondRS. The wireless device may receive a third DCI comprising a CSI requestfield indicating an aperiodic CSI-RS resource. The wireless device maydetermine that the aperiodic CSI resource overlaps in time with thefirst downlink message (e.g., first PDSCH message) and the seconddownlink message (e.g., second PDSCH message). The wireless device mayselect a selected RS among a first RS and a second RS based on the firstCORESET index and the second CORESET index. (or based on CORESET stateindices). The wireless device may receive the aperiodic CSI-RS resourcebased on the selected RS. The power consumption at the wireless deviceand the base station may be reduced. Interference to othercells/wireless devices may be reduced and/or avoided. Retransmission ofa downlink signal (e.g., PDSCH signal) may be reduced and/or avoided,which may result in a reduced transmission latency/delay.

A wireless device may receive, from a base station, a first DCI message.The first DCI message may schedule a physical downlink shared channelresource (e.g., PDSCH). The wireless device may receive the first DCImessage as a first downlink control message 2802 (e.g., PDCCH-1message). The wireless device may receive the first DCI message, forexample, based on monitoring the first downlink control channel (e.g.,PDCCH). A first time offset 2812 (e.g., Offset-1) between a reception ofthe first DCI message and a reception of the downlink message 2806(e.g., PDSCH message) may be equal to or greater than a first threshold2810 (e.g., timeDurationForQCL, Threshold-Sched-Offset, Threshold-1).

A time offset 2812 (e.g., the first time offset) between a reception ofa DCI message 2802 (e.g., the first DCI message) and a reception of adownlink message 2806 (e.g., the PDSCH message) scheduled by the DCImessage may be equal to or larger than a threshold 2810 (e.g.,timeDurationForQCL, Threshold-Sched-Offset). The downlink message 2806(e.g., PDSCH message) may be scheduled after the threshold, for example,based on the time offset being equal to or larger than the threshold2810. A time offset 2812 (e.g., the first time offset) between areception of a DCI message 2802 (e.g., the first DCI message) and areception of a downlink message 2806 (e.g., the PDSCH message) scheduledby the DCI message 2802 may be lower than a threshold 2810 (e.g.,timeDurationForQCL, Threshold-Sched-Offset). The downlink message 2806(e.g., PDSCH message) may be scheduled before the threshold 2810, forexample, based on the time offset being lower than the threshold.

The first DCI message 2802 may comprise a transmission configurationindication (TCI) field. The TCI field may indicate (or be equal to) acodepoint. The codepoint may indicate/comprise at least two TCI states(e.g., TCI-State_45 and TCI-State_13). The at least two TCI states maycomprise a first TCI state (e.g., TCI-State_45) indicated by a first TCIstate index and a second TCI state (e.g., TCI-State_13) indicated by asecond TCI state index.

The wireless device may receive, from a base station, one or moremessages comprising one or more configuration parameters for a servingcell (e.g., PCell, SCell, PsCell, SpCell, etc.). The one or moreconfiguration parameters may indicate the first TCI state index of thefirst TCI state. The one or more configuration parameters may indicatethe second TCI state index of the second TCI state.

The first TCI state may indicate at least one first RS (e.g., RS-1indicated by a RS parameter (e.g., higher layer parameter,referenceSignal)). The second TCI state may indicate at least one secondRS (e.g., RS-3 indicated by a RS parameter (e.g., higher layerparameter, referenceSignal)). The first TCI state may indicate at leastone first QCL type (e.g., QCL-TypeD, QCL-TypeA indicated by a QCLparameter (e.g., higher layer parameter, qcl-Type in QCL-Info)). Thesecond TCI state may indicate at least one second QCL type (e.g.,QCL-TypeD, QCL-TypeA indicated by a QCL parameter (e.g., higher layerparameter, qcl-Type in QCL-Info)).

The wireless device may receive the downlink message 2806 (e.g., PDSCHmessage) based on the at least two TCI states comprising the first TCIstate and the second TCI state. At least one first DM-RS port of thedownlink resource (e.g., PDSCH resource) may be quasi co-located withthe at least one first RS with respect to the first QCL type (e.g.,indicated by the first TCI state). At least one second DM-RS port of thedownlink resource (e.g., PDSCH resource) may be quasi co-located withthe at least one second RS with respect to the second QCL type(indicated by the second TCI state). At least one first DM-RS port ofthe downlink resource (e.g., PDSCH resource) may be quasi co-locatedwith the at least one first RS (e.g., as indicated by the first TCIstate). At least one second DM-RS port of the downlink resource (e.g.,PDSCH resource) may be quasi co-located with the at least one second RS(e.g., as indicated by the second TCI state).

The wireless device may receive the downlink message 2806 (e.g., PDSCHmessage) based on at least two QCL assumptions comprising a first QCLassumption and a second QCL assumption. The first QCL assumption mayindicate at least one first RS (e.g., SS/PBCH block, CSI-RS, RS-1,etc.). The second QCL assumption may indicate at least one second RS(e.g., SS/PBCH block, CSI-RS, RS-3, etc.) The receiving the downlinkmessage 2806 (PDSCH message) based on the at least two QCL assumptioncomprising the first QCL assumption and the second QCL assumption maycomprise that at least one first DM-RS port of the downlink resource(e.g., PDSCH resource) is quasi co-located with the at least one firstRS and at least one second DM-RS port of the downlink resource (e.g.,PDSCH resource) is quasi co-located with the at least one second RS.

The first QCL assumption may be indicated by a first TCI state index.The first QCL assumption may be indicated by a second TCI state index.The at least one first RS indicated by the first QCL assumption may beindicated by a first TCI state index (e.g., indicated by the one or moreconfiguration parameters (e.g., ssb-Index, csi-RS-Index)). The at leastone second RS indicated by the second QCL assumption may be indicated bya second TCI state index (e.g., indicated by the one or moreconfiguration parameters (e.g., ssb-Index, csi-RS-Index)). The first TCIstate may indicate the first QCL assumption. The second TCI state mayindicate the second QCL assumption.

The one or more configuration parameters may indicate a control resourceset (CORESET) configured with a TCI parameter (e.g., higher layerparameter, TCI-PresentInDCI) for a serving cell (e.g., PCell, SCell,SpCell, PsCell, etc.). The wireless device may receive the first DCImessage in the CORESET. The first time offset 2812 may be equal to orgreater than the first threshold 2810 (e.g., timeDurationForQCL,Threshold-Sched-Offset). The first time offset 2812 may be equal to orgreater than the first threshold 2810. The TCI field in the first DCImessage may indicate the at least two TCI states (e.g., the first TCIstate and the second TCI state). The wireless device maydetermine/assume that at least one first DM-RS port of the downlinkresource (e.g., PDSCH resource) may be quasi co-located with the atleast one first RS with respect to the first QCL type. At least onesecond DM-RS port of the downlink resource (e.g., PDSCH) may be quasico-located with the at least one second RS with respect to the secondQCL type.

The one or more configuration parameters may indicate a control resourceset (CORESET). The base station may not configure the CORESET with a TCIparameter (e.g., higher layer parameter, TCI-PresentInDCI). The wirelessdevice may receive the first DCI message 2802 (e.g., DCI format 1_1, DCIformat 1_0) in the CORESET. The first DCI message 2802 may not comprisea TCI field. The first DCI message 2802 may comprise a TCI field. Thefirst time offset 2812 may be equal to or greater than the firstthreshold 2810 (e.g., timeDurationForQCL, Threshold-Sched-Offset). Thefirst time offset 2812 may be equal to or greater than the firstthreshold 2810. The first DCI message 2802 may be received in theCORESET without being configured with the TCI parameter (e.g., higherlayer parameter, TCI-PresentInDCI). The wireless device may, in order todetermine antenna port QCL for the downlink resource (e.g., PDSCHresource), determine at least two TCI states (or at least two QCLassumptions) for a reception of the downlink resource (e.g., PDSCH).

The one or more configuration parameters may indicate a control resourceset (CORESET). The base station may not configure the CORESET with a TCIparameter (e.g., higher layer parameter, TCI-PresentInDCI). The basestation may configure the CORESET with TCI parameter (e.g., higher layerparameter, TCI-PresentInDCI). The wireless device may receive the firstDCI message 2802 (e.g., DCI format 1_0) in the CORESET. The first DCImessage 2802 may not comprise a TCI field. The first time offset 2812may be equal to or greater than the first threshold 2810 (e.g.,timeDurationForQCL, Threshold-Sched-Offset). The first time offset 2812may be equal to or greater than the first threshold 2810. The first DCImessage 2802 may not comprise the TCI field. The wireless device may, inorder to determine antenna port QCL for the downlink message 2806 (e.g.,PDSCH message), determine at least two TCI states (or at least two QCLassumptions) for a reception of the downlink message 2806 (e.g., PDSCHmessage).

The at least two TCI states may comprise a first TCI state and a secondTCI state. The at least two QCL assumptions may comprise a first QCLassumption and a second QCL assumption. The wireless device maydetermine the at least two TCI states for the reception of the downlinkmessage, (e.g., PDSCH message). The wireless device may assume that atleast one first DM-RS port of the downlink resource 2806 (e.g., PDSCHresource) is quasi co-located with the at least one first RS withrespect to the at least one first QCL type (indicated by the first TCIstate). At least one second DM-RS port of the downlink resource (e.g.,PDSCH resource) may be quasi co-located with the at least one second RSwith respect to the at least one second QCL type (e.g., as indicated bythe second TCI state). The wireless device may determine the at leasttwo QCL assumptions for the reception of the downlink message 2806(e.g., PDSCH message). The wireless device may assume that at least onefirst DM-RS port of the downlink resource (e.g., PDSCH resource) may bequasi co-located with the at least one first RS (indicated by the firstQCL assumption). At least one second DM-RS port of the downlink resource(e.g., PDSCH resource) may be quasi co-located with the at least onesecond RS (e.g., as indicated by the second QCL assumption).

The one or more configuration parameters may indicate a control resourceset (CORESET). The one or more configuration parameters may indicate asecond CORESET. The wireless device may determine the first TCI state(or the first QCL assumption) of the at least two TCI states (or the atleast two QCL assumptions) based on the CORESET. The wireless device maydetermine the second TCI state (or the second QCL assumption) of the atleast two TCI states (or the at least two QCL assumptions), for example,based on the second CORESET. The one or more configuration parametersmay indicate a CORESET index (e.g., CORESETID) for the CORESET. TheCORESET may be indicated by the CORESET index. The one or moreconfiguration parameters may indicate a second CORESET index (e.g.,CORESETID) for the second CORESET. The second CORESET may be indicatedby the second CORESET index.

The base station may configure the CORESET with a third TCI state (e.g.,via a first TCI parameter (e.g., higher layer parameter,tci-StatesPDCCH-ToAddList), and/or a second TCI parameter (e.g., higherlayer parameter, tci-StatesPDCCH-ToReleaseList or UE-specific PDCCH MACCE)). The wireless device may receive a downlink signal (e.g., DCImessage, PDCCH message) in the CORESET indicating a third QCLassumption. The base station may configure the second CORESET with afourth TCI state (e.g., via a first TCI parameter (e.g., higher layerparameter, tci-StatesPDCCH-ToAddList), and/or a second TCI parameter(e.g., higher layer parameter, tci-StatesPDCCH-ToReleaseList,UE-specific PDCCH MAC CE)). The wireless device may receive a downlinksignal (e.g., DCI message, PDCCH message) via the second CORESET with afourth QCL assumption. The third TCI state (or the third QCL assumption)may indicate at least one third RS (e.g., RS-2). The third TCI state mayindicate at least one third QCL type. At least one third DM-RS port of afirst downlink resource (e.g., PDCCH resource) in the CORESET may bequasi co-located with the at least one third RS with respect to the atleast one third QCL type. The fourth TCI state (or the fourth QCLassumption) may indicate at least one fourth RS (e.g., RS-4). The fourthTCI state may indicate at least one fourth QCL type. At least one fourthDM-RS port of a second downlink resource (e.g., PDCCH resource) in thesecond CORESET may be quasi co-located with the at least one fourth RSwith respect to the at least one fourth QCL type.

The wireless device may determine the first TCI state (or the first QCLassumption) of the at least two TCI states (or the at least two QCLassumptions), for example, based on the CORESET. The first TCI state (orthe first QCL assumption) may be same/similar as the third TCI state (orthe third QCL assumption) of the CORESET. The first TCI state may be thesame/similar as the third TCI state (or the third QCL assumption). Thewireless device may determine that at least one first DM-RS port of thedownlink resource (e.g., PDSCH resource) is quasi co-located with the atleast one third RS (indicated by the third TCI state or the third QCLassumption).

The wireless device may determine the second TCI state (or the secondQCL assumption), for example, based on the second CORESET. The secondTCI state (or the second QCL assumption) may be same/similar as thefourth TCI state (or the fourth QCL assumption) of the second CORESET.The second TCI state may be the same/similar as the fourth TCI state (orthe fourth QCL assumption). The wireless device may determine that atleast one second DM-RS port of the downlink resource (e.g., PDSCHresource) is quasi co-located with the at least one fourth RS (indicatedby the fourth TCI state or the fourth QCL assumption).

The one or more configuration parameters may indicate one or moreaperiodic channel state information (CSI) trigger states (e.g., by a CSIparameter (e.g., higher layer parameter,CSI-AperiodicTriggerStateList)). The one or more configurationparameters may indicate state-specific indices for the one or moreaperiodic CSI trigger states. Each aperiodic CSI trigger state of theone or more aperiodic CSI trigger states may be indicated by astate-specific index of the state-specific indices. An aperiodic CSItrigger state of the one or more aperiodic CSI trigger states may beindicated by a state-specific index. A first aperiodic CSI trigger stateof the one or more aperiodic CSI trigger states may be indicated by afirst state-specific index of the state-specific indices. A secondaperiodic CSI trigger state of the one or more aperiodic CSI triggerstates may be indicated by a second state-specific index of thestate-specific indices.

The wireless device may receive a second DCI message. The wirelessdevice may receive the second DCI message in a second downlink message2804 (e.g., PDCCH-2). The wireless device may receive the second DCIwhen monitoring the second downlink channel (e.g., PDCCH). The secondDCI message may comprise a CSI request field. The CSI request field mayindicate/trigger/initiate an aperiodic CSI trigger state (e.g.,indicating an aperiodic CSI-RS 2808) of the one or more aperiodic CSItrigger states. The CSI request field indicating/triggering/initiatingthe aperiodic CSI trigger state may comprise that the CSI request fieldis equal to a state-specific index of the aperiodic CSI trigger state.

The aperiodic CSI trigger state may comprise one or more reportconfigurations (e.g., a list of NZP-CSI-RS-ResourceSet). A reportconfiguration (e.g., NZP-CSI-RS-ResourceSet) of the one or more reportconfigurations may comprise one or more CSI-RS resources (e.g.,aperiodic CSI-RS resources, NZP-CSI-RS-Resources).

The base station may not configure the report configuration with a TRSparameter (e.g., higher layer parameter, trs-Info). The base station maynot configure the report configuration with a parameter repetition. Ascheduling offset 2814 (e.g., Offset-2) between a last symbol of thesecond downlink resource (e.g., PDCCH resource) carrying the second DCImessage and a first symbol of at least one CSI-RS resource of the one ormore CSI-RS resources in the report configuration may be smaller than asecond threshold 2816 (e.g., beamSwitchTiming, Threshold-2). Thewireless device may report the second threshold 2816 (e.g., to the basestation). The second threshold 2816 may comprise a first value (e.g.,14, 28, 48, etc. symbols).

The wireless device may receive the downlink message 2806 (e.g., PDSCHmessage) in one or more first symbols. The wireless device may receivean aperiodic CSI-RS 2808 for the at least one aperiodic CSI-RS resourcein one or more second symbols. The one or more first symbols and the oneor more second symbols may overlap 2818 (e.g., fully or partially). Thedownlink message 2806 (e.g., PDSCH message) and the aperiodic CSI-RS2808 (or the at least one aperiodic CSI-RS resource) may overlap (e.g.,overlap), for example, based on the one or more first symbols and theone or more second symbols overlapping.

The downlink message 2806 (e.g., PDSCH message) and the aperiodic CSI-RS2808 (or the at least one aperiodic CSI-RS resource) may overlap 2818 ina time duration. The time duration may comprise at least one symbol. Thetime duration may comprise at least one slot. The time duration maycomprise at least one subframe. The time duration may comprise at leastone mini-slot. The time duration may comprise the one or more secondsymbols. The time duration may comprise the one or more first symbols.

The wireless device may determine that the downlink message 2806 (e.g.,PDSCH) and the at least one aperiodic CSI-RS resource of the aperiodicCSI trigger state overlap 2818 (e.g., overlap in time duration partiallyor fully). The wireless device may select a selected RS among the atleast one first RS and the at least one second RS, for example, based ondetermining that the downlink message 2806 (e.g., PDSCH) and the atleast one aperiodic CSI-RS 2808 (e.g., CSI-RS resource) overlap 2818and/or the first TCI state index and the second TCI state index.

The wireless device may select the selected RS, for example, based onthe first TCI state index and the second TCI state index. The wirelessdevice may compare the first TCI state index and the second TCI stateindex. The wireless device may determine that the first TCI state indexis lower (or higher) than the second TCI state index, for example, basedon the comparison. The selected RS may comprise the at least one firstRS indicated by the first TCI state (or the first QCL assumption) basedon the first TCI state index being lower (or higher) than the second TCIstate index. The selected RS may comprise the at least one second RSindicated by the second TCI state (or the second QCL assumption) basedon the first TCI state index being lower (or higher) than the second TCIstate index.

The wireless device may apply the selected RS when receiving theaperiodic CSI-RS 2808 for the at least one aperiodic CSI-RS resource,for example, based on the selecting the selected RS. The wireless devicemay receive the aperiodic CSI-RS 2808 for the at least one aperiodicCSI-RS resource with the selected RS, for example, based on theselecting the selected RS.

The at least one aperiodic CSI-RS resource may be associated with afifth TCI state of the one or more TCI-State configurations. The fifthTCI state may indicate at least one fifth RS. The fifth TCI state mayindicate at least one fifth QCL type. The wireless device may receivethe aperiodic CSI-RS 2808 of the at least one aperiodic CSI-RS resource,for example, with the at least one fifth RS with respect to the at leastone fifth QCL type.

The first TCI state (or the first QCL assumption indicated by the firstTCI state) and the fifth TCI state (or a fifth QCL assumption indicatedby the fifth TCI state) may be different. The wireless device may notreceive the downlink message 2806 (e.g., PDSCH message) based on thefirst TCI state and the aperiodic CSI-RS 2808 (e.g., in the overlappedtime duration) simultaneously. The at least one first RS and the atleast one fifth RS may be different. The at least one first RS and theat least one fifth RS may not be quasi co-located.

The second TCI state (or the second QCL assumption indicated by thesecond TCI state) and the fifth TCI state (or a fifth QCL assumptionindicated by the fifth TCI state) may be different. The wireless devicemay not receive the downlink message 2806 (e.g., PDSCH message) based onthe second TCI state and the aperiodic CSI-RS 2808 (e.g., in theoverlapped time duration) simultaneously. The at least one second RS andthe at least one fifth RS may be different. The at least one second RSand the at least one fifth RS may not be quasi co-located.

A wireless device may receive a downlink signal/channel message 2806(e.g., PDSCH message) with a plurality of QCL assumptions (or aplurality of TCI States) simultaneously. A quantity of the plurality ofQCL assumptions (or the plurality of TCI States) may depend on wirelessdevice capability (e.g., a quantity of TRPs serving the wirelessdevice). The wireless device may be equipped with a plurality ofsending/receiving antenna panels. The quantity of the plurality of QCLassumptions (or the plurality of TCI States) may be equal to a quantityof the plurality of sending/receiving antenna panels (or any othervalue). The wireless device may be served with a plurality of TRPs(e.g., TRP-1, TRP-2). The quantity of the plurality of QCL assumptions(or the plurality of TCI States) may be equal to a quantity of theplurality of TRPs (or any other value). A first QCL assumption (or afirst TCI state) (e.g., RS-1) of the plurality of QCL assumptions (orthe plurality of TCI States) may be associated with a first TRP (e.g.,TRP-1) of the plurality of TRPs. A second QCL assumption (or a secondTCI state, e.g., RS-3) of the plurality of QCL assumptions (or theplurality of TCI States) may be associated with a second TRP (e.g.,TRP-2) of the plurality of TRPs. A QCL assumption (or a TCI state) maybe associated with a TRP. The wireless device may receive a downlinkmessage 2806 (e.g., PDSCH message) sent by the TRP based on the QCLassumption (or the TCI state). At least one DM-RS port, sent by the TRP,of the downlink signal/channel may be quasi co-located with at least oneRS indicated by the QCL assumption (or the TCI state).

The downlink message 2806 (e.g., PDSCH message) may comprise one or moreDM-RS groups. The one or more DM-RS groups may comprise a first DM-RSgroup and a second DM-RS group. The first DM-RS group may comprise theat least one first DM-RS port of the downlink message 2806 (e.g., PDSCHmessage). The second DM-RS group may comprise the at least one secondDM-RS port of the downlink message 2806 (e.g., PDSCH message).

The one or more configuration parameters may indicateDM-RS-group-specific indices (e.g., indicated by a parameter) for theone or more DM-RS groups. Each DM-RS group of the one or more DM-RSgroups may be indicated by a respective one DM-RS-group-specific indexof the DM-RS-group-specific indices. The first DM-RS group may beindicated by a first DM-RS-group-specific index. The second DM-RS groupmay be indicated by a second DM-RS-group-specific index. The at leastone first DM-RS port of the downlink message 2806 (e.g., PDSCH message)and the at least one second DM-RS port of the downlink message 2806(e.g., PDSCH message) may be sent by a first TRP (e.g., TRP-1) and asecond TRP (e.g., TRP-2), respectively.

The plurality of TRPs (e.g., TRP-1, TRP-2 in FIG. 28 ) may serve thewireless device. The wireless device may receive the first DCI messagefrom a first TRP (e.g., TRP-1) of the plurality of TRPs. The wirelessdevice may receive the first DCI message from a second TRP (e.g., TRP-2)of the plurality of TRPs. The first QCL assumption (or the first TCIstate, e.g., RS-1) may be associated with the first TRP. The second QCLassumption (or the second TCI state, e.g., RS-3) may be associated withthe second TRP. The wireless device may receive the downlink message2806 (e.g., PDSCH) based on the at least two TCI states comprising thefirst TCI state and the second TCI state. The wireless device mayreceive the downlink message 2806 (e.g., PDSCH) based on at least twoQCL assumptions comprising the first QCL assumption and the second QCLassumption.

The wireless device may determine that the downlink resource (e.g.,PDSCH resource) and the at least one aperiodic CSI-RS resource overlap.The wireless device may select a selected RS among the at least onefirst RS and the at least one second RS, for example, based ondetermining/selecting a selected TRP among the plurality of the TRPs.The selected TRP may send (e.g., transmit) the first DCI message.

The wireless device may determine that the first TRP of the plurality ofTRPs sends (e.g., transmits) the first DCI message. The wireless devicemay determine that the selected RS is the at least one first RS sent(e.g., transmitted) by the first TRP, for example, based on determiningthat the first TRP sends (e.g., transmits) the first DCI message. Thewireless device may determine that the second TRP of the plurality ofTRPs sends (e.g., transmits) the first DCI message. The wireless devicemay determine that the selected RS is the at least one second RS wassent (e.g., transmitted) by the second TRP, for example, based ondetermining that the second TRP sends (e.g., transmits) the first DCImessage.

The wireless device may select a selected RS among the at least onethird RS and the at least one fourth RS based on the CORESET index andthe second CORESET index, for example, based on determining that thedownlink resource (e.g., PDSCH resource) and the at least one aperiodicCSI-RS resource overlap 2808. The wireless device may compare theCORESET index and the second CORESET index. The wireless device maydetermine that the CORESET index is lower (or higher) than the secondCORESET index, for example, based on the comparing. The wireless devicemay select the selected RS, for example, based on the CORESET stateindex and the second CORESET index. The selected RS may comprise the atleast one third RS indicated by the third TCI state (or the third QCLassumption) of the CORESET, for example, based on the CORESET indexbeing lower (or higher) than the second CORESET index. The wirelessdevice may select the selected RS, for example, based on the CORESETindex and the second CORESET index. The selected RS may comprise the atleast one fourth RS indicated by the fourth TCI state (or the fourth QCLassumption) of the second CORESET, for example, based on the CORESETindex being lower (or higher) than the second CORESET index.

The plurality of TRPs (e.g., TRP-1, TRP-2) may serve the wirelessdevice. The wireless device may receive the aperiodic CSI-RS 2808 from afirst TRP (e.g., TRP-1) of the plurality of TRPs. The wireless devicemay receive the aperiodic CSI-RS from a second TRP (e.g., TRP-2) of theplurality of TRPs. The first QCL assumption (or the first TCI state,e.g., RS-1) may be associated with the first TRP. The second QCLassumption (or the second TCI state, e.g., RS-3) may be associated withthe second TRP. The wireless device may receive the downlink message2806 (e.g., PDSCH message) based on the at least two TCI statescomprising the first TCI state and the second TCI state. The wirelessdevice may receive the downlink message 2806 (e.g., PDSCH message) basedon at least two QCL assumptions comprising the first QCL assumption andthe second QCL assumption.

The wireless device may determine that the downlink resource (e.g.,PDSCH resource) and the at least one aperiodic CSI-RS resource overlap.The wireless device may select a selected RS among the at least onefirst RS and the at least one second RS, for example, based ondetermining/selecting a selected TRP among the plurality of the TRPs.The selected TRP may send (e.g., transmit) the aperiodic CSI-RS 2808.

The wireless device may determine that the first TRP of the plurality ofTRPs sends (e.g., transmits) the aperiodic CSI-RS 2808. The wirelessdevice may determine that the selected RS is the at least one first RSsent (e.g., transmitted) by the first TRP. The wireless device maydetermine that the second TRP of the plurality of TRPs sends (e.g.,transmits) the aperiodic CSI-RS. The wireless device may determine thatthe selected RS is the at least one second RS sent (e.g., transmitted)by the second TRP.

A wireless device may receive (e.g., from a base station) a first DCImessage scheduling a first downlink message 2806 (e.g., PDSCH message).The first DCI message may comprise a first TCI field. The first TCIfield may indicate a first TCI state indicating at least one first RSand/or a first QCL type. The wireless device may receive the firstdownlink message 2806 (e.g., PDSCH message) based on the first TCIstate. At least one first DM-RS port of the first downlink resource(e.g., PDSCH resource) may be quasi co-located with the at least onefirst RS with respect to the first QCL type (indicated by the first TCIstate).

The wireless device may receive the first downlink message 2806 (e.g.,PDSCH message) based on a first QCL assumption. The first QCL assumptionmay indicate at least one first RS. At least one first DM-RS port of thefirst downlink message 2806 (e.g., PDSCH message) may be quasico-located with the at least one first RS.

The wireless device may receive (e.g., from the base station) a secondDCI message scheduling a second downlink message (e.g., PDSCH message).The second DCI message may comprise a second TCI field. The second TCIfield may indicate a second TCI state indicating at least one second RSand/or a second QCL type. The wireless device may receive the seconddownlink message (e.g., PDSCH message) based on the second TCI state. Atleast one second DM-RS port of the second downlink message (e.g., PDSCHmessage) may be quasi co-located with the at least one second RS withrespect to the second QCL type (indicated by the second TCI state).

The wireless device may receive the second downlink message (e.g., PDSCHmessage) based on a second QCL assumption. The second QCL assumption mayindicate at least one second RS. At least one second DM-RS port of thesecond downlink resource (e.g., PDSCH resource) may be quasi co-locatedwith the at least one second RS.

The wireless device may receive (e.g., from the base station) one ormore messages comprising one or more configuration parameters for aserving cell (e.g., PCell, SCell, PsCell, SpCell, etc.). The one or moreconfiguration parameters may indicate one or more control resource sets(CORESETs) comprising a CORESET and a second CORESET. The one or moreconfiguration parameters may indicate CORESET-specific indices for theone or more CORESETs. Each CORESET of the one or more CORESETs may beindicated by a respective one CORESET-specific index of theCORESET-specific indices. The CORESET of the one or more CORESETs may beindicated by a CORESET-specific index. The second CORESET of the one ormore CORESETs may be indicated by a second CORESET-specific index.

The wireless device may receive the first DCI in the CORESET. Thewireless device may receive the third DCI in the second CORESET. Thewireless device may receive a third DCI. The third DCI may comprise aCSI request field. The CSI request field may indicate/trigger/initiatethe aperiodic CSI trigger state (e.g., Aperiodic CSI-RS) of the one ormore aperiodic CSI trigger states.

The first downlink resource (e.g., PDSCH resource), the second downlinkresource (e.g., PDSCH resource) and the aperiodic CSI-RS (or the atleast one aperiodic CSI-RS resource) may overlap (e.g., partially,fully) in a time duration. The time duration may comprise at least onesymbol. The time duration may comprise at least one slot. The timeduration may comprise at least one subframe. The time duration maycomprise at least one mini-slot. The wireless device may determine thatthe first downlink resource (e.g., PDSCH resource), the second downlinkresource (e.g., PDSCH resource) and the at least one aperiodic CSI-RSresource of the aperiodic CSI trigger state overlap (e.g., in the timeduration, partially, fully). The wireless device may select a selectedRS among the at least one first RS and the at least one second RS, forexample, based on the CORESET index and the second CORESET index.

The wireless device may select the selected RS, for example, based onthe CORESET index and the second CORESET index. The wireless device maycompare the CORESET index and the second CORESET index. The wirelessdevice may determine that the CORESET index is lower (or higher) thanthe second CORESET index, for example, based on the comparing. Thewireless device may select the selected RS, for example, based on theCORESET state index. The selected RS may comprise the at least one firstRS indicated by the first TCI state (or the first QCL assumption) of theCORESET, for example, based on the CORESET index being lower (or higher)than the second CORESET index. The wireless device may select theselected RS, for example, based on the CORESET index and the secondCORESET index. The selected RS may comprise the at least one second RSindicated by the second TCI state (or the second QCL assumption) of thesecond CORESET, for example, based on the CORESET index being lower (orhigher) than the second CORESET index. The wireless device may apply theselected RS when receiving the aperiodic CSI-RS, for example, based onthe selecting the selected RS.

FIG. 29 shows an example procedure of managing, by a wireless device,overlap between a downlink message and a CSI-RS. In step 2902, thewireless device may receive an RRC configuration. In step 2904, thewireless device may determine that the downlink message (e.g., PDSCHmessage) is scheduled with at least two QCL assumptions. In step 2906,the wireless device may determine that the downlink message (e.g., PDSCHmessage) overlaps with an aperiodic CSI-RS. In step 2910, the wirelessdevice may select/prioritize a QCL assumption among the at least two QCLassumptions, for example, based on one or more criteria (e.g., criteriadescribed in conjunction with FIG. 28 ). In step 2912, the wirelessdevice may receive the aperiodic CSI-RS with the selected/prioritizedQCL assumption. Alternatively, in step 2906, the wireless device maydetermine that the downlink message (e.g., PDSCH message) does notoverlap with an aperiodic CSI-RS. In step 2910, the wireless device mayreceive the aperiodic CSI-RS with a default QCL assumption.

FIG. 30 shows an example procedure of managing, by a base station,overlap between a downlink message and a CSI-RS. In step 3002, the basestation may send an RRC configuration. In step 3004, the base stationmay determine that a downlink message (e.g., PDSCH message) is scheduledwith at least two QCL assumptions. In step 3006, the base station maydetermine that the downlink message (e.g., PDSCH message) overlaps withan aperiodic CSI-RS. In step 3010, the base station mayselect/prioritize a QCL assumption among the at least two QCLassumptions, for example, based on one or more criteria (e.g., criteriadescribed in conjunction with FIG. 28 ). In step 3012, the base stationmay send the aperiodic CSI-RS with the selected/prioritized QCLassumption. Alternatively, in step 3006, the base station may determinethat the downlink message (e.g., PDSCH message) does not overlap with anaperiodic CSI-RS. In step 3010, the base station may send the aperiodicCSI-RS with a default QCL assumption.

A wireless device may perform a method comprising multiple operations.The wireless device may receive, from a base station, configurationparameters for a first antenna panel of a plurality of antenna panels ofa wireless device. The wireless device may activate the first antennapanel. The wireless device may deactivate the first antenna panel. Thewireless device may send, via an uplink resource, a message comprisingan indication that the first antenna panel is deactivated.

The wireless device may also perform one or more additional operations.The wireless device may receive an uplink grant indicating the uplinkresource of an uplink shared channel for transmission of the message.The message may comprise a medium access control control element (MACCE). The indication may comprise a field comprising a value indicatingthat the first antenna panel is deactivated. The indication may comprisea field comprising a first antenna panel index of the first antennapanel. The wireless device may receive one or more messages comprisingone or more configuration parameters associated with schedulingresources for one or more messages. The message may comprise an uplinkcontrol channel message. The deactivating the first antenna panel may bebased on an expiry of an inactivity timer, a downlink signal comprisinga second indication to deactivate the first antenna panel, activating asecond antenna panel, or completing reception of a scheduled message viathe first antenna panel.

Systems, devices and media may be configured with the method. A wirelessdevice may comprise one or more processors; and memory storinginstructions that, when executed by the one or more processors, causethe wireless device to perform the described method, additionaloperations and/or include the additional elements. A system may comprisea wireless device configured to perform the described method, additionaloperations and/or include the additional elements; and a base stationconfigured to receive the indication that the first antenna panel isdeactivated. A computer-readable medium may store instructions that,when executed, cause performance of the described method, additionaloperations and/or include the additional elements.

A base station may perform a method comprising multiple operations. Thebase station may send, to a wireless device, configuration parametersfor a first antenna panel of a plurality of antenna panels of thewireless device. The base station may send, via the first antenna panel,a first message. The base station may receive, from the wireless device,a second message comprising an indication that the first antenna panelis deactivated. The base station may send, based on the second message,one or more messages to the wireless device via one or more otherantenna panels.

The wireless device may also perform one or more additional operations.The second message may comprise an uplink control channel message. Thesecond message may comprise a medium access control control element (MACCE). The base station may suspend a configured uplink grant for thefirst antenna panel. The base station may stop sending, based on thesecond message, downlink shared channel messages (DL-SCH) via the firstantenna panel. The base station may suspend, based on deactivating thefirst antenna panel, a sounding reference signal (SRS) resourceconfiguration for the first antenna panel. The base station may abort,based on the indication that the first antenna panel is deactivated, abeam failure recovery procedure.

Systems, devices and media may be configured with the method. A basestation may comprise one or more processors; and memory storinginstructions that, when executed by the one or more processors, causethe base station to perform the described method, additional operationsand/or include the additional elements. A system may comprise a basestation configured to perform the described method, additionaloperations and/or include the additional elements; and a wireless deviceconfigured to send the indication that the first antenna panel isdeactivated. A computer-readable medium may store instructions that,when executed, cause performance of the described method, additionaloperations and/or include the additional elements.

A wireless device may perform a method comprising multiple operations.The wireless device may receive, by a wireless device, one or moremessages comprising one or more configuration parameters to scheduleresources for one or more messages. The wireless device may deactivate afirst antenna panel of a plurality of antenna panels of the wirelessdevice. The wireless device may send, based on the one or moreconfiguration parameters, a message indicating that the first antennapanel is deactivated.

The wireless device may also perform one or more additional operations.The one or more configuration parameters may indicate that the messagecomprises at least one of: a periodic message, a semi-persistentmessage, or an aperiodic message. The message may comprise a fieldindicating that the first antenna panel is deactivated. The message maycomprise capability indications. The one or more configurationparameters may further comprise at least one configuration parameter forthe first antenna panel. The message may be a channel state information(CSI) report for a second antenna panel that is activated.

Systems, devices and media may be configured with the method. A wirelessdevice may comprise one or more processors; and memory storinginstructions that, when executed by the one or more processors, causethe wireless device to perform the described method, additionaloperations and/or include the additional elements. A system may comprisea wireless device configured to perform the described method, additionaloperations and/or include the additional elements; and a base stationdevice configured to receive the message indicating that the firstantenna panel is deactivated. A computer-readable medium may storeinstructions that, when executed, cause performance of the describedmethod, additional operations and/or include the additional elements.

FIG. 31 shows example elements of a computing device that may be used toimplement any of the various devices described herein, including, e.g.,the base station 120A and/or 120B, the wireless device 110 (e.g., 110Aand/or 110B), or any other base station, wireless device, or computingdevice described herein. The computing device 3100 may include one ormore processors 3101, which may execute instructions stored in therandom-access memory (RAM) 3103, the removable media 3104 (such as aUniversal Serial Bus (USB) drive, compact disk (CD) or digital versatiledisk (DVD), or floppy disk drive), or any other desired storage medium.Instructions may also be stored in an attached (or internal) hard drive3105. The computing device 3100 may also include a security processor(not shown), which may execute instructions of one or more computerprograms to monitor the processes executing on the processor 3101 andany process that requests access to any hardware and/or softwarecomponents of the computing device 3100 (e.g., ROM 3102, RAM 3103, theremovable media 3104, the hard drive 3105, the device controller 3107, anetwork interface 3109, a GPS 3111, a Bluetooth interface 3112, a WiFiinterface 3113, etc.). The computing device 3100 may include one or moreoutput devices, such as the display 3106 (e.g., a screen, a displaydevice, a monitor, a television, etc.), and may include one or moreoutput device controllers 3107, such as a video processor. There mayalso be one or more user input devices 3108, such as a remote control,keyboard, mouse, touch screen, microphone, etc. The computing device3100 may also include one or more network interfaces, such as a networkinterface 3109, which may be a wired interface, a wireless interface, ora combination of the two. The network interface 3109 may provide aninterface for the computing device 3100 to communicate with a network3110 (e.g., a RAN, or any other network). The network interface 3109 mayinclude a modem (e.g., a cable modem), and the external network 3110 mayinclude communication links, an external network, an in-home network, aprovider's wireless, coaxial, fiber, or hybrid fiber/coaxialdistribution system (e.g., a DOCSIS network), or any other desirednetwork. Additionally, the computing device 3100 may include alocation-detecting device, such as a global positioning system (GPS)microprocessor 3111, which may be configured to receive and processglobal positioning signals and determine, with possible assistance froman external server and antenna, a geographic position of the computingdevice 3100.

The example in FIG. 31 may be a hardware configuration, although thecomponents shown may be implemented as software as well. Modificationsmay be made to add, remove, combine, divide, etc. components of thecomputing device 3100 as desired. Additionally, the components may beimplemented using basic computing devices and components, and the samecomponents (e.g., processor 3101, ROM storage 3102, display 3106, etc.)may be used to implement any of the other computing devices andcomponents described herein. For example, the various componentsdescribed herein may be implemented using computing devices havingcomponents such as a processor executing computer-executableinstructions stored on a computer-readable medium, as shown in FIG. 31 .Some or all of the entities described herein may be software based, andmay co-exist in a common physical platform (e.g., a requesting entitymay be a separate software process and program from a dependent entity,both of which may be executed as software on a common computing device).

The disclosed mechanisms herein may be performed if certain criteria aremet, for example, in a wireless device, a base station, a radioenvironment, a network, a combination of the above, and/or the like.Example criteria may be based on, for example, wireless device and/ornetwork node configurations, traffic load, initial system set up, packetsizes, traffic characteristics, a combination of the above, and/or thelike. If the one or more criteria are met, various examples may be used.It may be possible to implement examples that selectively implementdisclosed protocols.

A base station may communicate with a mix of wireless devices. Wirelessdevices and/or base stations may support multiple technologies, and/ormultiple releases of the same technology. Wireless devices may have somespecific capability(ies) depending on wireless device category and/orcapability(ies). A base station may comprise multiple sectors. A basestation communicating with a plurality of wireless devices may refer tobase station communicating with a subset of the total wireless devicesin a coverage area. Wireless devices referred to herein may correspondto a plurality of wireless devices of a particular LTE or 5G releasewith a given capability and in a given sector of a base station. Aplurality of wireless devices may refer to a selected plurality ofwireless devices, and/or a subset of total wireless devices in acoverage area. Such devices may operate, function, and/or perform basedon or according to drawings and/or descriptions herein, and/or the like.There may be a plurality of base stations or a plurality of wirelessdevices in a coverage area that may not comply with the disclosedmethods, for example, because those wireless devices and/or basestations perform based on older releases of LTE or 5G technology.

One or more features described herein may be implemented in acomputer-usable data and/or computer-executable instructions, such as inone or more program modules, executed by one or more computers or otherdevices. Generally, program modules include routines, programs, objects,components, data structures, etc. that perform particular tasks orimplement particular abstract data types when executed by a processor ina computer or other data processing device. The computer executableinstructions may be stored on one or more computer readable media suchas a hard disk, optical disk, removable storage media, solid statememory, RAM, etc. The functionality of the program modules may becombined or distributed as desired. The functionality may be implementedin whole or in part in firmware or hardware equivalents such asintegrated circuits, field programmable gate arrays (FPGA), and thelike. Particular data structures may be used to more effectivelyimplement one or more features described herein, and such datastructures are contemplated within the scope of computer executableinstructions and computer-usable data described herein.

Many of the elements in examples may be implemented as modules. A modulemay be an isolatable element that performs a defined function and has adefined interface to other elements. The modules may be implemented inhardware, software in combination with hardware, firmware, wetware(i.e., hardware with a biological element) or a combination thereof, allof which may be behaviorally equivalent. For example, modules may beimplemented as a software routine written in a computer languageconfigured to be executed by a hardware machine (such as C, C++,Fortran, Java, Basic, Matlab or the like) or a modeling/simulationprogram such as Simulink, Stateflow, GNU Octave, or LabVIEWMathScript.Additionally or alternatively, it may be possible to implement modulesusing physical hardware that incorporates discrete or programmableanalog, digital and/or quantum hardware. Examples of programmablehardware may comprise: computers, microcontrollers, microprocessors,application-specific integrated circuits (ASICs); field programmablegate arrays (FPGAs); and complex programmable logic devices (CPLDs).Computers, microcontrollers, and microprocessors may be programmed usinglanguages such as assembly, C, C++ or the like. FPGAs, ASICs, and CPLDsmay be programmed using hardware description languages (HDL), such asVHSIC hardware description language (VHDL) or Verilog, which mayconfigure connections between internal hardware modules with lesserfunctionality on a programmable device. The above-mentioned technologiesmay be used in combination to achieve the result of a functional module.

A non-transitory tangible computer readable media may compriseinstructions executable by one or more processors configured to causeoperations of multi-carrier communications described herein. An articleof manufacture may comprise a non-transitory tangible computer readablemachine-accessible medium having instructions encoded thereon forenabling programmable hardware to cause a device (e.g., a wirelessdevice, wireless communicator, a wireless device, a base station, andthe like) to allow operation of multi-carrier communications describedherein. The device, or one or more devices such as in a system, mayinclude one or more processors, memory, interfaces, and/or the like.Other examples may comprise communication networks comprising devicessuch as base stations, wireless devices or user equipment (wirelessdevice), servers, switches, antennas, and/or the like. A network maycomprise any wireless technology, including but not limited to,cellular, wireless, WiFi, 4G, 5G, any generation of 3GPP or othercellular standard or recommendation, wireless local area networks,wireless personal area networks, wireless ad hoc networks, wirelessmetropolitan area networks, wireless wide area networks, global areanetworks, space networks, and any other network using wirelesscommunications. Any device (e.g., a wireless device, a base station, orany other device) or combination of devices may be used to perform anycombination of one or more of steps described herein, including, forexample, any complementary step or steps of one or more of the abovesteps.

Although examples are described above, features and/or steps of thoseexamples may be combined, divided, omitted, rearranged, revised, and/oraugmented in any desired manner. Various alterations, modifications, andimprovements will readily occur to those skilled in the art. Suchalterations, modifications, and improvements are intended to be part ofthis description, though not expressly stated herein, and are intendedto be within the spirit and scope of the descriptions herein.Accordingly, the foregoing description is by way of example only, and isnot limiting.

1. A method comprising: receiving, by a wireless device, downlinkcontrol information (DCI) associated with a downlink signal; andreceiving, using at least one transmission configuration indicator (TCI)state of at least two TCI states, the downlink signal, wherein using theat least one TCI state is based on: a scheduling offset, between a lastsymbol of the DCI and a first symbol of the downlink signal, being lessthan a threshold; and the downlink signal overlapping in time with aphysical downlink channel transmission that is indicated with the atleast two TCI states.
 2. The method of claim 1, wherein: the at leasttwo TCI states comprise a first TCI state and a second TCI state, andthe method further comprises receiving one or more configurationparameters that indicate the first TCI state and the second TCI state.3. The method of claim 1, further comprising: receiving one or moreconfiguration parameters that indicate one or more aperiodic channelstate information (CSI) trigger states; and receiving the downlinksignal based on the one or more aperiodic CSI trigger states.
 4. Themethod of claim 1, wherein the DCI comprises a TCI field that indicatesthe at least two TCI states.
 5. The method of claim 1, wherein thedownlink signal comprises an aperiodic channel state informationreference signal (CSI-RS).
 6. The method of claim 1, wherein thedownlink signal comprises a physical downlink shared channel (PDSCH)transmission.
 7. The method of claim 1, wherein the physical downlinkchannel transmission comprises a scheduled physical downlink sharedchannel (PDSCH) transmission.
 8. A wireless device comprising: one ormore processors; and memory storing instructions that, when executed bythe one or more processors, cause the wireless device to: receivedownlink control information (DCI) associated with a downlink signal;and receive, using at least one transmission configuration indicator(TCI) state of at least two TCI states, the downlink signal, whereinusing the at least one TCI state is based on: a scheduling offset,between a last symbol of the DCI and a first symbol of the downlinksignal, being less than a threshold; and the downlink signal overlappingin time with a physical downlink channel transmission that is indicatedwith the at least two TCI states.
 9. The wireless device of claim 8,wherein: the at least two TCI states comprise a first TCI state and asecond TCI state, and the instructions, when executed by the one or moreprocessors, cause the wireless device to receive one or moreconfiguration parameters that indicate the first TCI state and thesecond TCI state.
 10. The wireless device of claim 8, wherein theinstructions, when executed by the one or more processors, cause thewireless device to: receive one or more configuration parameters thatindicate one or more aperiodic channel state information (CSI) triggerstates; and receive the downlink signal based on the one or moreaperiodic CSI trigger states.
 11. The wireless device of claim 8,wherein the DCI comprises a TCI field that indicates the at least twoTCI states.
 12. The wireless device of claim 8, wherein the downlinksignal comprises an aperiodic channel state information reference signal(CSI-RS).
 13. The wireless device of claim 8, wherein the downlinksignal comprises a physical downlink shared channel (PDSCH)transmission.
 14. The wireless device of claim 8, wherein the physicaldownlink channel transmission comprises a scheduled physical downlinkshared channel (PDSCH) transmission.
 15. A system comprising: a wirelessdevice; and a base station, wherein the base station is configured to:transmit, to the wireless device, downlink control information (DCI)associated with a downlink signal; and wherein the wireless device isconfigured to: receive, from the base station, using at least onetransmission configuration indicator (TCI) state of at least two TCIstates, the downlink signal, wherein using the at least one TCI state isbased on: a scheduling offset, between a last symbol of the DCI and afirst symbol of the downlink signal, being less than a threshold; andthe downlink signal overlapping in time with a physical downlink channeltransmission that is indicated with the at least two TCI states.
 16. Thesystem of claim 15, wherein: the at least two TCI states comprise afirst TCI state and a second TCI state, and the wireless device isconfigured to receive one or more configuration parameters that indicatethe first TCI state and the second TCI state.
 17. The system of claim15, wherein: the base station is configured to transmit one or moreconfiguration parameters that indicate one or more aperiodic channelstate information (CSI) trigger states, and the wireless device isconfigured to receive the downlink signal based on the one or moreaperiodic CSI trigger states.
 18. The system of claim 15, wherein theDCI comprises a TCI field that indicates the at least two TCI states.19. The system of claim 15, wherein the downlink signal comprises anaperiodic channel state information reference signal (CSI-RS).
 20. Thesystem of claim 15, wherein the downlink signal comprises a physicaldownlink shared channel (PDSCH) transmission.
 21. The system of claim15, wherein the physical downlink channel transmission comprises ascheduled physical downlink shared channel (PDSCH) transmission.
 22. Anon-transitory computer-readable medium storing instructions that, whenexecuted, configure a wireless device to: receive downlink controlinformation (DCI) associated with a downlink signal; and receive, usingat least one transmission configuration indicator (TCI) state of atleast two TCI states, the downlink signal, wherein using the at leastone TCI state is based on: a scheduling offset, between a last symbol ofthe DCI and a first symbol of the downlink signal, being less than athreshold; and the downlink signal overlapping in time with a physicaldownlink channel transmission that is indicated with the at least twoTCI states.
 23. The non-transitory computer-readable medium of claim 22,wherein: the at least two TCI states comprise a first TCI state and asecond TCI state, and the instructions further configure the wirelessdevice to receive one or more configuration parameters that indicate thefirst TCI state and the second TCI state.
 24. The non-transitorycomputer-readable medium of claim 22, wherein the instructions furtherconfigure the wireless device to: receive one or more configurationparameters that indicate one or more aperiodic channel state information(CSI) trigger states; and receive the downlink signal based on the oneor more aperiodic CSI trigger states.
 25. The non-transitorycomputer-readable medium of claim 22, wherein the DCI comprises a TCIfield that indicates the at least two TCI states.
 26. The non-transitorycomputer-readable medium of claim 22, wherein the downlink signalcomprises an aperiodic channel state information reference signal(CSI-RS).
 27. The non-transitory computer-readable medium of claim 22,wherein the downlink signal comprises a physical downlink shared channel(PDSCH) transmission.
 28. The non-transitory computer-readable medium ofclaim 22, wherein the physical downlink channel transmission comprises ascheduled physical downlink shared channel (PDSCH) transmission.